Nepomuk crashed by itself at session start-up. Application: Tymczasowa usługa Nepomuka (nepomukservicestub), signal: Aborted [Current thread is 1 (Thread 0x7fde53c36760 (LWP 3082))] Thread 1 (Thread 0x7fde53c36760 (LWP 3082)): [KCrash Handler] #6 0x00007fde51005d95 in __GI_raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64 #7 0x00007fde510072ab in __GI_abort () at abort.c:93 #8 0x00007fde5103fece in __libc_message (do_abort=2, fmt=0x7fde5111f8c8 "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:198 #9 0x00007fde51045c06 in malloc_printerr (action=3, str=0x7fde5111c893 "invalid fastbin entry (free)", ptr=<optimized out>) at malloc.c:6283 #10 0x00007fde53727c12 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x60e800) at kernel/qcoreapplication.cpp:1444 #11 0x00007fde5374f0c3 in sendPostedEvents () at kernel/qcoreapplication.h:220 #12 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:277 #13 0x00007fde504f758d in g_main_dispatch (context=0x62cd00) at gmain.c:2425 #14 g_main_context_dispatch (context=0x62cd00) at gmain.c:2995 #15 0x00007fde504f7d88 in g_main_context_iterate (context=0x62cd00, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3073 #16 0x00007fde504f7f59 in g_main_context_iteration (context=0x62cd00, may_block=1) at gmain.c:3136 #17 0x00007fde5374f51f in QEventDispatcherGlib::processEvents (this=0x60e430, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422 #18 0x00007fde518ddf9e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204 #19 0x00007fde53723a32 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149 #20 0x00007fde53723c2f in QEventLoop::exec (this=0x7fffb00ba590, flags=...) at kernel/qeventloop.cpp:201 #21 0x00007fde53727df7 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064 #22 0x0000000000403d70 in main (argc=2, argv=0x7fffb00babc8) at /usr/src/debug/kde-runtime-4.7.2/nepomuk/servicestub/main.cpp:170
It seems as though one the nepomuk services crashed (Temporary service Nepomuk - what is that?), but the backtrace doesn't contain any nepomuk related information, so it's practically impossible to debug. Sorry, but I'm closing this as INVALID. However, if this does happen again, please do report it.