#0  0xb724599f in ?? () from /lib/tls/i686/cmov/libc.so.6
#1  0x00000001 in ?? ()
#2  0x00000001 in ?? ()
#3  0xb748a7fc in __pthread_mutex_unlock_usercnt ()
   from /lib/tls/i686/cmov/libpthread.so.0
#4  0xb724750f in ?? () from /lib/tls/i686/cmov/libc.so.6
#5  0x00000028 in ?? ()
#6  0x0809a050 in ?? ()
#7  0xb73067bc in ?? () from /lib/tls/i686/cmov/libc.so.6
#8  0x00000001 in ?? ()
#9  0x00000001 in ?? ()
#10 0xb748dec1 in __lll_mutex_unlock_wake ()
   from /lib/tls/i686/cmov/libpthread.so.0
#11 0x0001a150 in ?? ()
#12 0xb7306820 in ?? () from /lib/tls/i686/cmov/libc.so.6
#13 0xb731e120 in ?? () from /lib/tls/i686/cmov/libc.so.6
#14 0x0809b000 in ?? ()
#15 0xb6961338 in ?? ()
#16 0xb724ae30 in free () from /lib/tls/i686/cmov/libc.so.6
#17 0xb724ae30 in free () from /lib/tls/i686/cmov/libc.so.6
#18 0xb7530f59 in ?? () from /usr/lib/libcups.so.2
#19 0x080d7bf0 in ?? ()
#20 0x00000000 in ?? ()