Comment 34 for bug 366222

Well, I can replicate things.

It started doing the same thing today again, and I could replicate the fix: applications won't respond to mouse, except for Dolphin; open terminal through Dolphin, kill Xorg, relogin, and things are fine.

This is what I get with "aptitude search restricted":

p kubuntu-restricted-extras - Commonly used restricted packages
p linux-restricted-modules - Generic Linux restricted modules.
c linux-restricted-modules-2.6.27-11-generic - Non-free Linux kernel modules for version 2.6.27 on x86/x86_64
c linux-restricted-modules-2.6.27-7-generic - Non-free Linux kernel modules for version 2.6.27 on x86/x86_64
c linux-restricted-modules-2.6.27-9-generic - Non-free Linux kernel modules for version 2.6.27 on x86/x86_64
i linux-restricted-modules-2.6.28-11-generic - Non-free Linux kernel modules for version 2.6.28 on x86/x86_64
p linux-restricted-modules-2.6.28-11-server - Non-free Linux kernel modules for version 2.6.28 on x86/x86_64
p linux-restricted-modules-2.6.28-3-rt - Non-free Linux kernel modules for version 2.6.28 on x86/x86_64
i A linux-restricted-modules-common - Non-free Linux 2.6.28 modules helper script
i linux-restricted-modules-generic - Restricted Linux modules for generic kernels
p linux-restricted-modules-rt - Restricted Linux modules for rt kernels
p linux-restricted-modules-server - Restricted Linux modules for server kernels
v restricted-manager -
v restricted-manager-core -
v restricted-manager-kde -
p ubuntu-restricted-extras - Commonly used restricted packages
p xubuntu-restricted-extras - Commonly used restricted packages