Mouse freezes when anything USB powered is added

Hi, guys,

It's been a while, mainly because I've had no problems, but recently I've noticed that when I add a USB powered "drive" like a camera or MP3 player to the m/c, my Logitech wireless mouse freezes up. Nothing else causes the problem, in fact I have been wondering why MS have brought out 7 as I was very happy with Vista! I try to operate the PC by key strokes but ctrl-alt-del cannot shut down the M/c. It goes to the "shutting down" window and stays there. 30sec hold of off button then comes in to play!
It's a Medion Intel Core 2 Quad CPU Q6600 @ 2.40GHz, 3.0GB RAM running Vista Home Premium Service Pack 2. All updates have been applied. Correct Security procedures and housekeeping in place.
Any help will be appreciated.

Win 7 is what Vista should been when it came out.

Yes, I will update my laptops ti Win 7 from Vista.

Bump

What size is the power supply in that computer? This could be a power problem.

Try uninstalling the Logitech mouse driver, which is appallingly buggy in my experience. You will still get basic mouse functionality with the standard Windows drivers. See if it still freezes up then.

Thanks to you both for responding. Unfortunately I'm away from the m/c for a few days. I will check out the power supply and try the driver trick on my return.