.
Thread 2 (process 13492):
#0  0xb7f0f410 in __kernel_vsyscall ()
#1  0xb7725aa5 in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb7581e5a in mailsem_internal_wait () from /usr/lib/libetpan.so.11
#3  0xb7581eaf in mailsem_down () from /usr/lib/libetpan.so.11
#4  0x081fe3ad in ?? ()
#5  0x08604188 in ?? ()
#6  0x08980738 in ?? ()
#7  0x00000000 in ?? ()
.
Thread 1 (process 13490):
#0  0xb7b45ce7 in IA__gtk_ctree_is_viewable (ctree=0x835a178, node=0x854de90)
    at /build/buildd/gtk+2.0-2.12.9/gtk/gtkctree.c:4041
	work = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__gtk_ctree_is_viewable"
#1  0xb7b45dc5 in IA__gtk_ctree_node_moveto (ctree=0x835a178, node=0x854de90, 
    column=-1, row_align=0.5, col_align=0)
    at /build/buildd/gtk+2.0-2.12.9/gtk/gtkctree.c:5178
	row = <value optimized out>
	__PRETTY_FUNCTION__ = "IA__gtk_ctree_node_moveto"
#2  0x080ec1c5 in ?? ()
#3  0x0835a178 in ?? ()
#4  0x0854de90 in ?? ()
#5  0xffffffff in ?? ()
#6  0x3f000000 in ?? ()
#7  0x00000000 in ?? ()