Application: kactivitymanagerd (1.0)
KDE Platform Version: 4.8.2 (4.8.2)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-20-generic-pae i686
Distribution: Ubuntu precise (development branch)

-- Information about the crash:
- What I was doing when the application crashed: 
Booting up and launching the activity manager, this time my mouse didn't freeze like it did the first time on the initial boot after install of Kubuntu 12.04. So I was able to get online to report it.

- Unusual behavior I noticed:
 When I tried to download bug symbols it said they were not available for this application. I have to presume it means one of these, ActivityManager or nepomuk or soprano, But it doesn't specify.

-- Backtrace:
Application: KDE Activity Manager (kactivitymanagerd), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb5427740 (LWP 1287))]

Thread 2 (Thread 0xb2749b40 (LWP 1308)):
[KCrash Handler]
#7  QMutex::lock (this=0x99b8d7c) at thread/qmutex.cpp:153
#8  0xb5895227 in Soprano::Error::ErrorCache::clearError() const () from /usr/lib/libsoprano.so.4
#9  0xb5895858 in Soprano::Error::ErrorCache::setError(Soprano::Error::Error const&) const () from /usr/lib/libsoprano.so.4
#10 0xb5838266 in Soprano::Client::DBusModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsopranoclient.so.1
#11 0xb6f670b6 in Nepomuk::MainModel::executeQuery (this=0x9ab7628, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...) at ../../nepomuk/core/nepomukmainmodel.cpp:212
#12 0xb274f5ac in ?? () from /usr/lib/kde4/activitymanager_plugin_nepomuk.so
#13 0xb2756c02 in ?? () from /usr/lib/kde4/activitymanager_plugin_nepomuk.so
#14 0xb6c27de0 in QThreadPrivate::start (arg=0x9ae0cf8) at thread/qthread_unix.cpp:298
#15 0xb5cb0d4c in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#16 0xb5f4bace in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb5427740 (LWP 1287)):
#0  0xb7727424 in __kernel_vsyscall ()
#1  0xb5f3b17b in read () from /lib/i386-linux-gnu/libc.so.6
#2  0xb57329be in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb56f3b90 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb56f40a2 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb56f4261 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb6d6f887 in QEventDispatcherGlib::processEvents (this=0x999b5c0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#7  0xb62e0aaa in QGuiEventDispatcherGlib::processEvents (this=0x999b5c0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#8  0xb6d3b50d in QEventLoop::processEvents (this=0xbfa38014, flags=...) at kernel/qeventloop.cpp:149
#9  0xb6d3b7a9 in QEventLoop::exec (this=0xbfa38014, flags=...) at kernel/qeventloop.cpp:204
#10 0xb6d40eba in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#11 0xb6225a74 in QApplication::exec () at kernel/qapplication.cpp:3820
#12 0x0804c597 in ?? ()
#13 0xb5e7a4d3 in __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
#14 0x0804c5dd in _start ()

Possible duplicates by query: bug 297279, bug 296120, bug 295755, bug 294993, bug 294882.

Reported using DrKonqi