kdetv crashes

hi!

after an upgrade from debian sarge to debian sid kdetv doesn't start any more. 
here is the output from the crashmanager:
(no debugging symbols found)
Using host libthread_db library "/lib/tls/libthread_db.so.1".
(no debugging symbols found)
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
(no debugging symbols found)
  . . .
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1236475776 (LWP 4057)]
(no debugging symbols found)
  . . .
(no debugging symbols found)
[KCrash handler]
#3  0xb66a0a50 in vasprintf () from /lib/tls/libc.so.6
#4  0xb668578d in asprintf () from /lib/tls/libc.so.6
#5  0xb5f52d24 in vbi_capture_v4l2_new () from /usr/lib/libzvbi.so.0
#6  0xb5f9449b in VbiDecoderPrivate::init ()
   from /usr/lib/kde3/kdetv_libzvbidecoder.so
#7  0xb5f95b09 in VbiDecoderPlugin::restart ()
   from /usr/lib/kde3/kdetv_libzvbidecoder.so
#8  0xb5f9509c in VbiDecoderPlugin::VbiDecoderPlugin ()
   from /usr/lib/kde3/kdetv_libzvbidecoder.so
#9  0xb5f968e1 in create_libzvbidecoder ()
   from /usr/lib/kde3/kdetv_libzvbidecoder.so
#10 0xb7f0ba9a in PluginFactory::doGetPlugin () from /usr/lib/libkdetv.so.1
#11 0xb7f0b910 in PluginFactory::getPluginRefCounted ()
   from /usr/lib/libkdetv.so.1
#12 0xb7f0a762 in PluginFactory::getVbiPlugin () from /usr/lib/libkdetv.so.1
#13 0xb7f060c9 in VbiManager::scanPlugins () from /usr/lib/libkdetv.so.1
#14 0xb7f06158 in VbiManager::addClient () from /usr/lib/libkdetv.so.1
#15 0xb5fa1324 in Telex::Plugin::Plugin () from /usr/lib/kde3/kdetv_telex.so
#16 0xb5fa3ffb in create_telex () from /usr/lib/kde3/kdetv_telex.so
#17 0xb7f0ba9a in PluginFactory::doGetPlugin () from /usr/lib/libkdetv.so.1
#18 0xb7f0b910 in PluginFactory::getPluginRefCounted ()
   from /usr/lib/libkdetv.so.1
#19 0xb7f0a5e2 in PluginFactory::getMiscPlugin () from /usr/lib/libkdetv.so.1
#20 0xb7f15762 in MiscManager::scanPlugins () from /usr/lib/libkdetv.so.1
#21 0xb7f15a45 in MiscManager::setScreen () from /usr/lib/libkdetv.so.1
#22 0xb7ee8918 in Kdetv::createScreen () from /usr/lib/libkdetv.so.1
#23 0xb7f0435d in KdetvWidget::setDriver () from /usr/lib/libkdetv.so.1
#24 0xb7f04041 in KdetvWidget::KdetvWidget () from /usr/lib/libkdetv.so.1
#25 0x08057d66 in QGList::count ()
#26 0x08056852 in ?? ()
#27 0xbffff530 in ?? ()
#28 0x00000000 in ?? ()
#29 0x00000000 in ?? ()
#30 0x00000000 in ?? ()
#31 0x00000000 in ?? ()
#32 0x00000001 in ?? ()
#33 0x0806a200 in _IO_stdin_used ()
#34 0x00000000 in ?? ()
#35 0x0806a01a in _IO_stdin_used ()
#36 0x08069fe8 in _IO_stdin_used ()
#37 0xbffff534 in ?? ()
#38 0xb66a9a4b in free () from /lib/tls/libc.so.6
#39 0xb664d904 in __libc_start_main () from /lib/tls/libc.so.6
#40 0x08056521 in ?? ()

does anyone know whats the problem?

thx

christian