The version 0.10.99 of presence snapshot core dumps on a regular basis after running for a certain time. Doing a gdb shows that the core dump occurs at msg_queue_destroy: #0 0x001b87f2 in msg_queue_destroy (q=0xb6293e98) at /usr/local/src/ser-0.10.99-dev35-pa-4.1/lib/../fastlock.h:147 147 asm volatile( Doing a backtrace shows: (gdb) backtrace #0 0x001b87f2 in msg_queue_destroy (q=0xb6293e98) at /usr/local/src/ser-0.10.99-dev35-pa-4.1/lib/../fastlock.h:147 #1 0x008e0a52 in free_presentity (_p=0xb6293e58) at presentity.c:409 #2 0x008e0b0e in release_presentity (_p=0xb6293e58) at presentity.c:354 #3 0x008de196 in timer_pdomain (_d=0xb626ab78) at pdomain.c:156 #4 0x008d7eb0 in timer_all_pdomains () at dlist.c:234 #5 0x008dd4e7 in timer (ticks=83700431, param=0x0) at pa_mod.c:449 #6 0x080928f1 in compat_old_handler (ti=1339206901, tl=0xb6202738, data=0x1) at timer.c:916 #7 0x08092b6e in slow_timer_main () at timer.c:1026 #8 0x0805e7b5 in main_loop () at main.c:1035 #9 0x0805fda2 in main (argc=1, argv=0xbff59804) at main.c:1627 Any clues wil be appricated.