any more an image with mkv files under kaffeine

Hi ! (sorry for my bad english !)

since kubuntu 11.10 update (from 11.04), I do not have any more an image for video mkv files under kaffeine. sound works fine.

no problem before update to 11.10.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: kaffeine 1.2.2-1ubuntu3
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic-pae 3.0.4
Uname: Linux 3.0.0-12-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Tue Oct 18 19:15:21 2011
InstallationMedia: Kubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
SourcePackage: kaffeine
UpgradeStatus: Upgraded to oneiric on 2011-10-12 (5 days ago)