Here is stack trace of every threads in application:

Thread 16 (Thread 0xb6793b90 (LWP 2730)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x0098d973 in poll () from /lib/libc.so.6
#2  0x081d3f9b in omni::SocketCollection::Select (this=0x91e4cd0) at SocketCollection.cc:500
#3  0x081fbb52 in omni::tcpEndpoint::AcceptAndMonitor (this=<value optimized out>, func=<value optimized out>, cookie=<value optimized out>) at ./tcp/tcpEndpoint.cc:659
#4  0x081b8e1d in omni::giopRendezvouser::execute (this=<value optimized out>) at giopRendezvouser.cc:92
#5  0x08156e8e in omniAsyncWorker::real_run (this=<value optimized out>) at invoker.cc:232
#6  0x0815601b in omniAsyncWorkerInfo::run (this=<value optimized out>) at invoker.cc:280
#7  0x0815712a in omniAsyncWorker::run (this=Could not find the frame base for "omniAsyncWorker::run(void*)".
) at invoker.cc:159
#8  0x002be8ed in omni_thread_wrapper (ptr=<value optimized out>) at posix.cc:456
#9  0x00a4049b in start_thread () from /lib/libpthread.so.0
#10 0x0099742e in clone () from /lib/libc.so.6

Thread 15 (Thread 0xb5f92b90 (LWP 2731)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a448c2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b84 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x002bd478 in omni_condition::timedwait (this=<value optimized out>, secs=<value optimized out>, nanosecs=<value optimized out>) at posix.cc:172
#4  0x081aeb73 in omni::Scavenger::execute (this=<value optimized out>) at giopStrand.cc:719
#5  0x08156e8e in omniAsyncWorker::real_run (this=<value optimized out>) at invoker.cc:232
#6  0x0815601b in omniAsyncWorkerInfo::run (this=<value optimized out>) at invoker.cc:280
#7  0x0815712a in omniAsyncWorker::run (this=Could not find the frame base for "omniAsyncWorker::run(void*)".
) at invoker.cc:159
#8  0x002be8ed in omni_thread_wrapper (ptr=<value optimized out>) at posix.cc:456
#9  0x00a4049b in start_thread () from /lib/libpthread.so.0
#10 0x0099742e in clone () from /lib/libc.so.6

Thread 14 (Thread 0xafdffb90 (LWP 2782)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00990211 in select () from /lib/libc.so.6
#2  0x0610432e in fdManager::process (this=0x6133e60, delay=0.00050000000000000001) at ../../../src/libCom/fdmgr/fdManager.cpp:129
#3  0x054d77ac in epicsThread () at /home/to52638/sources/gc/trunk/vs/impl/epics/src/epicsVs.cc:47
#4  0x0611860b in start_routine (arg=0x9254ac0) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#5  0x00a4049b in start_thread () from /lib/libpthread.so.0
#6  0x0099742e in clone () from /lib/libc.so.6

Thread 13 (Thread 0xafdbeb90 (LWP 2783)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a44595 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b3d in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x06119ee7 in epicsEventWait (pevent=0x925f2f8) at ../../../src/libCom/osi/os/posix/osdEvent.c:75
#4  0x061123bf in epicsEvent::wait (this=0x929114c) at ../../../src/libCom/osi/epicsEvent.cpp:63
#5  0x0610ed74 in ipAddrToAsciiEnginePrivate::run (this=0x9290d28) at ../../../src/libCom/misc/ipAddrToAsciiAsynchronous.cpp:305
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x9291154) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x925f470) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 12 (Thread 0xafd3db90 (LWP 2784)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a448c2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b84 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x06119de4 in epicsEventWaitWithTimeout (pevent=0x9291408, timeout=0.0087420540000000008) at ../../../src/libCom/osi/os/posix/osdEvent.c:65
#4  0x06112256 in epicsEvent::wait (this=0x92912d0, timeOut=0.0087420540000000008) at ../../../src/libCom/osi/epicsEvent.cpp:72
#5  0x06120e0c in timerQueueActive::run (this=0x9291270) at ../../../src/libCom/timer/timerQueueActive.cpp:93
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x92912d8) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x9291580) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 11 (Thread 0xafc2eb90 (LWP 2798)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00998388 in recvfrom () from /lib/libc.so.6
#2  0x0519c33d in udpRecvThread::run (this=0xafe1ed40) at ../udpiiu.cpp:366
#3  0x0611150a in epicsThreadCallEntryPoint (pPvt=0xafe1ed50) at ../../../src/libCom/osi/epicsThread.cpp:85
#4  0x0611860b in start_routine (arg=0xafe03118) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#5  0x00a4049b in start_thread () from /lib/libpthread.so.0
#6  0x0099742e in clone () from /lib/libc.so.6

Thread 10 (Thread 0xab8fcb90 (LWP 2812)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00998308 in recv () from /lib/libc.so.6
#2  0x0519fb79 in tcpiiu::recvBytes (this=0x92b7970, pBuf=0xab7be030, nBytesInBuf=16384, stat=@0xab8fc2a0) at ../tcpiiu.cpp:319
---Type <return> to continue, or q <return> to quit---
#3  0x051a2e6f in tcpRecvThread::run (this=0x92b7a2c) at ../comBuf.h:183
#4  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x92b7a30) at ../../../src/libCom/osi/epicsThread.cpp:85
#5  0x0611860b in start_routine (arg=0x92a10e8) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#6  0x00a4049b in start_thread () from /lib/libpthread.so.0
#7  0x0099742e in clone () from /lib/libc.so.6

Thread 9 (Thread 0xab87bb90 (LWP 2813)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a44595 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b3d in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x06119ee7 in epicsEventWait (pevent=0x92a1490) at ../../../src/libCom/osi/os/posix/osdEvent.c:75
#4  0x061123bf in epicsEvent::wait (this=0x92b7b7c) at ../../../src/libCom/osi/epicsEvent.cpp:63
#5  0x051a57a9 in tcpSendThread::run (this=0x92b7a58) at ../tcpiiu.cpp:89
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x92b7a5c) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x92a1328) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 8 (Thread 0xab7b9b90 (LWP 2818)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00998308 in recv () from /lib/libc.so.6
#2  0x081faba6 in omni::tcpConnection::Recv (this=0x92b33b8, buf=0x92c40a8, sz=<value optimized out>, deadline_secs=0, deadline_nanosecs=0) at ./tcp/tcpConnection.cc:422
#3  0x081b2b69 in omni::giopStream::inputMessage (this=<value optimized out>) at giopStream.cc:869
#4  0x081cb3ec in omni::giopImpl12::inputNewServerMessage (g=<value optimized out>) at giopImpl12.cc:555
#5  0x081cb52a in omni::giopImpl12::inputMessageBegin (g=<value optimized out>, unmarshalHeader=<value optimized out>) at giopImpl12.cc:768
#6  0x081bbd05 in omni::GIOP_S::dispatcher (this=<value optimized out>) at GIOP_S.cc:248
#7  0x081b8528 in omni::giopWorker::real_execute (this=<value optimized out>) at giopWorker.cc:215
#8  0x081b8beb in omni::giopWorkerInfo::run (this=<value optimized out>) at giopWorker.cc:103
#9  0x081b8c3a in omni::giopWorker::execute (this=Could not find the frame base for "omni::giopWorker::execute()".
) at giopWorker.cc:117
#10 0x08156e8e in omniAsyncWorker::real_run (this=<value optimized out>) at invoker.cc:232
#11 0x0815601b in omniAsyncWorkerInfo::run (this=<value optimized out>) at invoker.cc:280
#12 0x0815712a in omniAsyncWorker::run (this=Could not find the frame base for "omniAsyncWorker::run(void*)".
) at invoker.cc:159
#13 0x002be8ed in omni_thread_wrapper (ptr=<value optimized out>) at posix.cc:456
#14 0x00a4049b in start_thread () from /lib/libpthread.so.0
#15 0x0099742e in clone () from /lib/libc.so.6

Thread 7 (Thread 0xaa7b7b90 (LWP 2829)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00998308 in recv () from /lib/libc.so.6
#2  0x0519fb79 in tcpiiu::recvBytes (this=0x92b7ba8, pBuf=0xab7c2044, nBytesInBuf=16384, stat=@0xaa7b72a0) at ../tcpiiu.cpp:319
#3  0x051a2e6f in tcpRecvThread::run (this=0x92b7c64) at ../comBuf.h:183
#4  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x92b7c68) at ../../../src/libCom/osi/epicsThread.cpp:85
#5  0x0611860b in start_routine (arg=0x92a1ae8) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#6  0x00a4049b in start_thread () from /lib/libpthread.so.0
#7  0x0099742e in clone () from /lib/libc.so.6

Thread 6 (Thread 0xaa736b90 (LWP 2830)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a44595 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
#2  0x009a3b3d in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x06119ee7 in epicsEventWait (pevent=0x92a18a8) at ../../../src/libCom/osi/os/posix/osdEvent.c:75
#4  0x061123bf in epicsEvent::wait (this=0x92b7db4) at ../../../src/libCom/osi/epicsEvent.cpp:63
#5  0x051a57a9 in tcpSendThread::run (this=0x92b7c90) at ../tcpiiu.cpp:89
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x92b7c94) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x92cc288) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 5 (Thread 0xa9ef4b90 (LWP 2858)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a448c2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b84 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x06119de4 in epicsEventWaitWithTimeout (pevent=0x9179550, timeout=0.024678533999999998) at ../../../src/libCom/osi/os/posix/osdEvent.c:65
#4  0x06112256 in epicsEvent::wait (this=0x9178fe0, timeOut=0.024678533999999998) at ../../../src/libCom/osi/epicsEvent.cpp:72
#5  0x06120e0c in timerQueueActive::run (this=0x9178f80) at ../../../src/libCom/timer/timerQueueActive.cpp:93
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x9178fe8) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x91798e0) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 4 (Thread 0xa9eb3b90 (LWP 2859)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00998388 in recvfrom () from /lib/libc.so.6
#2  0x0519c33d in udpRecvThread::run (this=0x930c248) at ../udpiiu.cpp:366
#3  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x930c258) at ../../../src/libCom/osi/epicsThread.cpp:85
#4  0x0611860b in start_routine (arg=0x92f2eb8) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#5  0x00a4049b in start_thread () from /lib/libpthread.so.0
#6  0x0099742e in clone () from /lib/libc.so.6

Thread 3 (Thread 0xa9e72b90 (LWP 2860)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a470b9 in __lll_lock_wait () from /lib/libpthread.so.0
#2  0x00a42864 in _L_lock_824 () from /lib/libpthread.so.0
#3  0x00a4271d in pthread_mutex_lock () from /lib/libpthread.so.0
#4  0x009a3ca6 in pthread_mutex_lock () from /lib/libc.so.6
#5  0x06119746 in epicsMutexOsdLock (pmutex=0x9179320) at ../../../src/libCom/osi/os/posix/osdMutex.c:44
#6  0x06111700 in epicsMutexLock (pmutexNode=0x9179340) at ../../../src/libCom/osi/epicsMutex.cpp:145
#7  0x06111e1f in epicsMutex::lock (this=0x91792a4) at ../../../src/libCom/osi/epicsMutex.cpp:238
#8  0x051a2f9c in tcpRecvThread::run (this=0x9333524) at ../../../include/epicsGuard.h:71
#9  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x9333528) at ../../../src/libCom/osi/epicsThread.cpp:85
#10 0x0611860b in start_routine (arg=0x92f3678) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#11 0x00a4049b in start_thread () from /lib/libpthread.so.0
#12 0x0099742e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa9df1b90 (LWP 2861)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a44595 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b3d in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
---Type <return> to continue, or q <return> to quit---
#3  0x06119ee7 in epicsEventWait (pevent=0x933bd68) at ../../../src/libCom/osi/os/posix/osdEvent.c:75
#4  0x061123bf in epicsEvent::wait (this=0x9333674) at ../../../src/libCom/osi/epicsEvent.cpp:63
#5  0x051a57a9 in tcpSendThread::run (this=0x9333550) at ../tcpiiu.cpp:89
#6  0x0611150a in epicsThreadCallEntryPoint (pPvt=0x9333554) at ../../../src/libCom/osi/epicsThread.cpp:85
#7  0x0611860b in start_routine (arg=0x9337c10) at ../../../src/libCom/osi/os/posix/osdThread.c:282
#8  0x00a4049b in start_thread () from /lib/libpthread.so.0
#9  0x0099742e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb78946d0 (LWP 2726)):
#0  0x0084e422 in __kernel_vsyscall ()
#1  0x00a44595 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0x009a3b3d in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#3  0x002bd4fb in omni_condition::wait (this=<value optimized out>) at posix.cc:163
#4  0x0813b06f in omni::ORBAsyncInvoker::perform (this=Could not find the frame base for "omni::ORBAsyncInvoker::perform(unsigned long, unsigned long)".
) at corbaOrb.cc:1129
#5  0x0813ae7d in omniOrbORB::run (this=<value optimized out>) at corbaOrb.cc:813
#6  0x08060837 in startServer () at /xxxxxxxx/Server/Server.cpp:299
#7  0x08061648 in main (argc=2, argv=0xbff49914) at /xxxxxxxx/Server/Server.cpp:691


Result of netstat (no bytes are pending for udp):
bash-3.2# netstat -tn
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address               Foreign Address             State      
tcp        0      0 XX.XX.XX.XX:45972         XX.XX.XX.XX:44569         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:52151         XX.XX.XX.XX:33041         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:49477         XX.XX.XX.XX:5064          ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:50852         XX.XX.XX.XX:54359         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:60181         XX.XX.XX.XX:59399         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:35435         XX.XX.XX.XX:42058         ESTABLISHED 
tcp       32      0 XX.XX.XX.XX:51959         XX.XX.XX.XX:38658         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:38658         XX.XX.XX.XX:51954         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:58159         XX.XX.XX.XX:45907         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:38201         XX.XX.XX.XX:5064          ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:52143         XX.XX.XX.XX:33041         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:51954         XX.XX.XX.XX:38658         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:38658         XX.XX.XX.XX:51953         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:38658         XX.XX.XX.XX:51959         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:38658         XX.XX.XX.XX:51958         ESTABLISHED 
tcp       33      0 XX.XX.XX.XX:59460         XX.XX.XX.XX:43128         CLOSE_WAIT  
tcp        0      0 XX.XX.XX.XX:58159         XX.XX.XX.XX:45900         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:45907         XX.XX.XX.XX:58159         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:59399         XX.XX.XX.XX:60181         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:45909         XX.XX.XX.XX:58159         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:5064          XX.XX.XX.XX:49477         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:51958         XX.XX.XX.XX:38658         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:60181         XX.XX.XX.XX:59393         ESTABLISHED 
tcp        0      0 XX.XX.XX.XX:58159         XX.XX.XX.XX:45909         ESTABLISHED