CentOS - Mar 2013 - Weird mouse behaviour (after upgrade to CentOS 6.4?)

Hi.

For a few days now I've had some pretty annoying mouse-related problems 
on my CentOS setup. I'm not sure if I get "false" mouse events or
what
it is, but quite frequently I find that the system has somehow got into 
a state where mouse clicks are not properly received - although I can 
move the pointer all right, and they keyboard also works just fine. The 
only way I've been able to get back to a sane state, is to switch to a 
different virtual console via Ctrl+Alt+F-key, then back in a similar manner.

This seemed to start after the last round of automatic updates, which 
took me to CentOS 6.4, although I suppose this might be coincidence.

Has anyone else seen this kind of behaviour? Any idea at all what's 
going on?

- Toralf

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