no input possible after switching between virtual desktops

[homix]

After switching between virtual desktops sometimes no input in eclipse editors is possible. You can select editor windows and menu entries. But keyboard input is not possible.

If you switch again between desktops, it works.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: eclipse (not installed)
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
Uname: Linux 3.0.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sun Apr 22 22:18:47 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: eclipse
UpgradeStatus: No upgrade log present (probably fresh install)