Version:            (using KDE 4.2.0)
Compiler:          gcc-4.2.4 x86_64-pc-linux-gnu
OS:                Linux
Installed from:    Gentoo Packages

When my screen-saver kicks in (or, I run "krunner_lock --lock" manually), the system functions normally until I attempt to exit the screen-saver.  At this time, the screen-saver exits without prompting for a password, and presents a KCrash screen.  Also, the screen saver process still shows on my process list and needs to be killed manually.

Here is the back-trace as reported by KCrash:

Application: KRunner Locker (krunner_lock), signal SIGSEGV
0x00007f1f95c66c21 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 10443)]

Thread 2 (Thread 0x41bfc950 (LWP 10444)):
#0  0x00007f1f95c8e8c2 in select () from /lib/libc.so.6
#1  0x00007f1f976de7e3 in ?? () from /usr/lib64/qt4/libQtCore.so.4
#2  0x00007f1f9762642a in ?? () from /usr/lib64/qt4/libQtCore.so.4
#3  0x00007f1f973b8067 in start_thread () from /lib/libpthread.so.0
#4  0x00007f1f95c94bad in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1f9a0be750 (LWP 10443)):
[KCrash Handler]
#5  0x00007f1f8fc46c42 in xkl_process_error () from /usr/lib64/libxklavier.so.12
#6  0x00007f1f99338c3f in _XError () from /usr/lib64/libX11.so.6
#7  0x00007f1f9933a4b8 in _XReply () from /usr/lib64/libX11.so.6
#8  0x00007f1f99324f1c in XInternAtom () from /usr/lib64/libX11.so.6
#9  0x00007f1f8fc4663c in ?? () from /usr/lib64/libxklavier.so.12
#10 0x00007f1f8fa0ca5a in g_object_newv () from /usr/lib64/libgobject-2.0.so.0
#11 0x00007f1f8fa0d47f in g_object_new_valist () from /usr/lib64/libgobject-2.0.so.0
#12 0x00007f1f8fa0d6a6 in g_object_new () from /usr/lib64/libgobject-2.0.so.0
#13 0x00007f1f8fc4644d in xkl_engine_get_instance () from /usr/lib64/libxklavier.so.12
#14 0x00007f1f8fe69d04 in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#15 0x00007f1f8fe69edf in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#16 0x00007f1f8fe64277 in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#17 0x00007f1f8fe6d469 in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#18 0x00007f1f8fe6dbf7 in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#19 0x00007f1f8fe71569 in ?? () from /usr/lib64/libkdeinit4_kxkb.so
#20 0x00007f1f8fe71e91 in KPluginFactory::createInstance<KxkbPart, QWidget> () from /usr/lib64/libkdeinit4_kxkb.so
#21 0x00007f1f97e2243d in KPluginFactory::create () from /usr/lib64/libkdecore.so.5
#22 0x0000000000418b7d in _start ()


I have attempted to re-install krunner, qt-core, glib, libxklavier, and even glibc in an attempt to resolve this issue.

Note: this issue started with my upgrade to 4.2-RC1, and continued into 4-2 final.  It was not a problem in 4.2-beta.

Please let me know if I can provide any further information.