Robert,
Received this stack trace after a client using SunBird received MODIFICATION FAILED. The same stack trace occurred using T-Bird with the lightning (MODIFICATION FAILED) plug in
Did not catch any errors etc in the ical.log
Wed 05 May 2010 11:34:10 AM EDT: Caught SIGSEGV (6), traceback: Wed 05 May 2010 11:34:10 AM EDT: 0x0000000047342b /usr/bin/zarafa-server(_Z7sigsegvi+0x4b) [0x47342b] Wed 05 May 2010 11:34:10 AM EDT: 0x007f2516660960 /lib64/libpthread.so.0(+0xf960) [0x7f2516660960] Wed 05 May 2010 11:34:10 AM EDT: 0x007f25162fd955 /lib64/libc.so.6(gsignal+0x35) [0x7f25162fd955] Wed 05 May 2010 11:34:10 AM EDT: 0x007f25162ff135 /lib64/libc.so.6(abort+0x175) [0x7f25162ff135] Wed 05 May 2010 11:34:10 AM EDT: 0x007f251633b6bb /lib64/libc.so.6(+0x716bb) [0x7f251633b6bb] Wed 05 May 2010 11:34:10 AM EDT: 0x007f2516341076 /lib64/libc.so.6(+0x77076) [0x7f2516341076] Wed 05 May 2010 11:34:10 AM EDT: 0x000000005688a3 /usr/bin/zarafa-server(soap_dealloc+0xc3) [0x5688a3] Wed 05 May 2010 11:34:10 AM EDT: 0x00000000570798 /usr/bin/zarafa-server(soap_end+0x18) [0x570798] Wed 05 May 2010 11:34:10 AM EDT: 0x00000000477ec3 /usr/bin/zarafa-server(_Z16gsoap_fserveloopP4soap+0x13) [0x477ec3] Wed 05 May 2010 11:34:10 AM EDT: 0x00000000612f99 /usr/bin/zarafa-server(_Z10soap_serveP4soap+0xb9) [0x612f99] Wed 05 May 2010 11:34:10 AM EDT: 0x0000000047957b /usr/bin/zarafa-server(_ZN22ECSoapServerConnection15process_requestEPv+0xbb) [0x47957b] Wed 05 May 2010 11:34:10 AM EDT: 0x007f2516658951 /lib64/libpthread.so.0(+0x7951) [0x7f2516658951] Wed 05 May 2010 11:34:10 AM EDT: 0x007f25163aed3d /lib64/libc.so.6(clone+0x6d) [0x7f25163aed3d] Wed 05 May 2010 11:34:10 AM EDT: When reporting this traceback, please include Linux distribution name, system architecture and Zarafa version. Wed 05 May 2010 11:34:10 AM EDT: Caught SIGSEGV (11), traceback: Wed 05 May 2010 11:34:10 AM EDT: 0x0000000047342b /usr/bin/zarafa-server(_Z7sigsegvi+0x4b) [0x47342b] Wed 05 May 2010 11:34:10 AM EDT: 0x007f2516660960 /lib64/libpthread.so.0(+0xf960) [0x7f2516660960] Wed 05 May 2010 11:34:10 AM EDT: 0x007f25163a7893 /lib64/libc.so.6(__select+0x33) [0x7f25163a7893] Wed 05 May 2010 11:34:10 AM EDT: 0x000000004781ea /usr/bin/zarafa-server(_ZN22ECSoapServerConnection6SelectEv+0x12a) [0x4781ea] Wed 05 May 2010 11:34:10 AM EDT: 0x000000004771f5 /usr/bin/zarafa-server(_Z14running_serverPcS_+0x1f95) [0x4771f5] Wed 05 May 2010 11:34:10 AM EDT: 0x00000000477c6c /usr/bin/zarafa-server(main+0x5ec) [0x477c6c] Wed 05 May 2010 11:34:10 AM EDT: 0x007f25162e8d2d /lib64/libc.so.6(__libc_start_main+0xfd) [0x7f25162e8d2d] Wed 05 May 2010 11:34:10 AM EDT: 0x00000000473059 /usr/bin/zarafa-server() [0x473059] Wed 05 May 2010 11:34:10 AM EDT: When reporting this traceback, please include Linux distribution name, system architecture and Zarafa version.