I use a Hauppauge USB analog TV Card.

After a lot channel switching or just use I can't use any Keyboard or
Mice(just Mouse Key 1 and 2 are in function) anymore.

I can use all type ov viewing software(hauppauge software or DScaler),
everywhere the same problem.

If I log off an relogin in Windows XP all is ok.

How can I check if it is an Driver Problem?

It seems so.

regards
Tobias Philipp