In fact it seems it is a segfault. I see this in the system log:
Nov 5 14:47:37 linux-ypbf nxexec: PAM unable to dlopen(/lib64/security/pam_pwcheck.so)
Nov 5 14:47:37 linux-ypbf nxexec: PAM [error: /lib64/security/pam_pwcheck.so: undefined symbol: pam_syslog]
Nov 5 14:47:37 linux-ypbf nxexec: PAM adding faulty module: /lib64/security/pam_pwcheck.so
Nov 5 14:48:00 linux-ypbf kernel: drkonqi[4477]: segfault at 0000135d8a594908 rip 00002ae35433c558 rsp 00007fff797eb7b0 error 6
Nov 5 14:48:04 linux-ypbf kernel: drkonqi[4483]: segfault at 0000135d8a594908 rip 00002b2b40fc5558 rsp 00007fff62770590 error 6
Nov 5 14:48:05 linux-ypbf kernel: drkonqi[4490]: segfault at 0000135d8a594908 rip 00002b40278f3558 rsp 00007fff216c7530 error 6
Nov 5 14:48:05 linux-ypbf kernel: kicker[4491]: segfault at 0000135d8a594908 rip 00002b32ea8f0558 rsp 00007fff9e445c40 error 6
Nov 5 14:48:14 linux-ypbf kernel: drkonqi[4589]: segfault at 0000135d8a594908 rip 00002b96975c8558 rsp 00007fffb4eab960 error 6
Nov 5 14:48:24 linux-ypbf kernel: drkonqi[4617]: segfault at 0000135d8a594908 rip 00002ae929c4c558 rsp 00007fff5f0464f0 error 6
Nov 5 14:48:24 linux-ypbf kernel: drkonqi[4618]: segfault at 0000135d8a594908 rip 00002ad3d91c6558 rsp 00007fffccea7600 error 6
Nov 5 14:48:24 linux-ypbf kernel: drkonqi[4620]: segfault at 0000135d8a594908 rip 00002b06849e1558 rsp 00007fffc80297c0 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4619]: segfault at 0000135d8a594908 rip 00002aba5a773558 rsp 00007fff010e7b90 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4625]: segfault at 0000135d8a594908 rip 00002b0683dc9558 rsp 00007fff17b43420 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4629]: segfault at 0000135d8a594908 rip 00002ad0eb3e5558 rsp 00007fffee313cd0 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4630]: segfault at 0000135d8a594908 rip 00002b04f86d3558 rsp 00007fffa713db30 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4634]: segfault at 0000135d8a594908 rip 00002abee2406558 rsp 00007fffd13e4e50 error 6
Nov 5 14:48:25 linux-ypbf kernel: drkonqi[4636]: segfault at 0000135d8a594908 rip 00002b601712e558 rsp 00007fff765a1ca0 error 6
Nov 5 14:48:28 linux-ypbf nxexec: PAM unable to dlopen(/lib64/security/pam_pwcheck.so)
Nov 5 14:48:28 linux-ypbf nxexec: PAM [error: /lib64/security/pam_pwcheck.so: undefined symbol: pam_syslog]
Nov 5 14:48:28 linux-ypbf nxexec: PAM adding faulty module: /lib64/security/pam_pwcheck.so
Nov 5 14:48:28 linux-ypbf kernel: drkonqi[4665]: segfault at 0000135d8a594908 rip 00002ac3b1564558 rsp 00007fff1aa97950 error 6
Nov 5 14:48:28 linux-ypbf kernel: drkonqi[4667]: segfault at 0000135d8a594908 rip 00002b8f021be558 rsp 00007ffffe6cd2d0 error 6
Nov 5 14:48:28 linux-ypbf kernel: drkonqi[4671]: segfault at 0000135d8a594908 rip 00002b5f89f2d558 rsp 00007fff8cfb24e0 error 6
Nov 5 14:48:40 linux-ypbf python: hp-systray(qt4)[4640]: error: No system tray detected on this system. Unable to start, exiting.
Nov 5 14:48:40 linux-ypbf kernel: python[4640]: segfault at 0000135d8a59490c rip 00002b45ce7823da rsp 00007fff847e08c8 error 4