Taskbar keeps freezing

Over the last couple of days my taskbar keeps freezing. There’s no pattern to it. It just stops responding to mouse events and it seems any other events, since when windows close, they don’t leave the taskbar. The only thing I can do at that time is ALT-Tab to a terminal window, su - and reboot.
I’m running openSUSE 11.4 64-bit. I guess the only other thing I can tell you is the updates I’ve put in the last few days, since that’s likely the cause:
pm-utils-1.4.1-5.27.1 Wed 18 Apr 2012 10:44:22 PM EDT
superkaramba-4.6.0-4.5.1 Wed 18 Apr 2012 12:24:50 AM EDT
vlc-2.0.1-8.1 Tue 17 Apr 2012 07:57:44 PM EDT
vlc-qt-2.0.1-8.1 Tue 17 Apr 2012 07:57:43 PM EDT
vlc-noX-2.0.1-8.1 Tue 17 Apr 2012 07:57:42 PM EDT
libvlc5-2.0.1-8.1 Tue 17 Apr 2012 07:57:38 PM EDT
libvlccore5-2.0.1-8.1 Tue 17 Apr 2012 07:57:37 PM EDT
samba-3.6.3-112.1 Mon 16 Apr 2012 09:57:44 PM EDT
libxine1-pulse-1.1.20.1-58.17 Mon 16 Apr 2012 09:57:43 PM EDT
libxine1-gnome-vfs-1.1.20.1-58.17 Mon 16 Apr 2012 09:57:42 PM EDT
libxine1-codecs-1.1.20.1-58.17 Mon 16 Apr 2012 09:57:42 PM EDT
gmplayer-1.0rc4_r34853-1.3 Mon 16 Apr 2012 09:57:42 PM EDT
samba-client-3.6.3-112.1 Mon 16 Apr 2012 09:57:40 PM EDT
mplayer2-2.0+r20120128-4.3 Mon 16 Apr 2012 09:57:38 PM EDT
MPlayer-1.0rc4_r34853-1.3 Mon 16 Apr 2012 09:57:37 PM EDT
libxine1-1.1.20.1-58.17 Mon 16 Apr 2012 09:57:34 PM EDT
libldb1-1.0.2-112.1 Mon 16 Apr 2012 09:57:33 PM EDT
sox-14.4.0-34.1 Mon 16 Apr 2012 09:57:32 PM EDT
samba-client-32bit-3.6.3-112.1 Mon 16 Apr 2012 09:57:32 PM EDT
mlt-0.7.8+0.7.9_78_g14c5abc-2.2 Mon 16 Apr 2012 09:57:31 PM EDT
libmlt++3-0.7.8+0.7.9_78_g14c5abc-2.2 Mon 16 Apr 2012 09:57:30 PM EDT
libtevent0-0.9.11-112.1 Mon 16 Apr 2012 09:57:29 PM EDT
libtalloc2-32bit-2.0.5-112.1 Mon 16 Apr 2012 09:57:29 PM EDT
libsox2-14.4.0-34.1 Mon 16 Apr 2012 09:57:29 PM EDT
libsmbclient0-3.6.3-112.1 Mon 16 Apr 2012 09:57:29 PM EDT
wxcam-1.1-1.16 Mon 16 Apr 2012 09:57:28 PM EDT
libpython2_7-1_0-32bit-2.7-8.12.1 Mon 16 Apr 2012 09:57:28 PM EDT
libmlt5-0.7.8+0.7.9_78_g14c5abc-2.2 Mon 16 Apr 2012 09:57:28 PM EDT
libtdb1-32bit-1.2.9-112.1 Mon 16 Apr 2012 09:57:27 PM EDT
libtdb1-1.2.9-112.1 Mon 16 Apr 2012 09:57:27 PM EDT
libtalloc2-2.0.5-112.1 Mon 16 Apr 2012 09:57:27 PM EDT
libwbclient0-3.6.3-112.1 Mon 16 Apr 2012 09:57:26 PM EDT
libwbclient0-32bit-3.6.3-112.1 Mon 16 Apr 2012 09:57:25 PM EDT
kdenlive-0.8.2.1-1.18 Mon 16 Apr 2012 01:11:52 AM EDT
ffmpeg-0.10.2-2.2 Mon 16 Apr 2012 01:11:50 AM EDT
libavformat52-0.7.12-1.1 Mon 16 Apr 2012 01:11:49 AM EDT
libavfilter2-0.10.2-2.2 Mon 16 Apr 2012 01:11:49 AM EDT
libavdevice53-0.10.2-2.2 Mon 16 Apr 2012 01:11:49 AM EDT
libxine2-codecs-1.2.1-1.19 Mon 16 Apr 2012 01:11:48 AM EDT
libavformat53-0.10.2-2.2 Mon 16 Apr 2012 01:11:48 AM EDT
libavfilter1-0.7.12-1.1 Mon 16 Apr 2012 01:11:48 AM EDT
smplayer-0.8.0-1.1 Mon 16 Apr 2012 01:11:46 AM EDT
gstreamer-0_10-plugins-ugly-orig-addon-0.10.19-34.4 Mon 16 Apr 2012 01:11:46 AM EDT
libavcodec52-0.7.12-1.1 Mon 16 Apr 2012 01:11:42 AM EDT
libavcodec53-0.10.2-2.2 Mon 16 Apr 2012 01:11:41 AM EDT
libxine2-1.2.1-1.19 Mon 16 Apr 2012 01:11:40 AM EDT
libswscale0-0.7.12-1.1 Mon 16 Apr 2012 01:11:40 AM EDT
libpostproc52-0.10.2-2.2 Mon 16 Apr 2012 01:11:40 AM EDT
libswscale2-0.10.2-2.2 Mon 16 Apr 2012 01:11:39 AM EDT
libswresample0-0.10.2-2.2 Mon 16 Apr 2012 01:11:39 AM EDT
gstreamer-0_10-plugins-ugly-lang-0.10.19-34.4 Mon 16 Apr 2012 01:11:39 AM EDT
gstreamer-0_10-ffmpeg-0.10.13-999.1 Mon 16 Apr 2012 01:11:36 AM EDT
gstreamer-0_10-plugins-ugly-0.10.19-34.4 Mon 16 Apr 2012 01:11:35 AM EDT
libavutil51-0.10.2-2.2 Mon 16 Apr 2012 01:11:34 AM EDT
libavutil50-0.7.12-1.1 Mon 16 Apr 2012 01:11:34 AM EDT
libx264-122-0.122svn20120414-3.1 Mon 16 Apr 2012 01:11:33 AM EDT
libmlt4-0.7.8-2.1 Sat 14 Apr 2012 01:27:22 PM EDT

try rename file ~/.kde4/share/config/plasma-desktop-appletsrc and re-logon