Mac mini and mouse: Curious bug

My Mac mini shows a quite curious bug. When I move the mouse while logging off an user - whether an admin or one with restricted rights - the mouse freezes. I have to log in and off again to make the mouse move again. I changed the mouses and re-installed the OS. It didn't fix the bug. Has anyone an idea how to solve this problem?
Message was edited by: Malah

Hi there,
I am also having bizarre freezes of the mouse (wireless USB Microsoft (yuk) which had been fine. The mini, however, has been weird anyway lately. I had to "zap" P RAM something not done since golden days ) to get the external firewire drive to mount again...I am now running a 7 port hub(firewire and Usb) (iogear) and all is working well . Mouse , however is plugged right into the USB port on Mac Mini . It also seems to not be playing well with Firefox version 2 (disn't do the FF 3 update yet because I was already having problems)...
I'd say I'm getting mouse freezes every time I leave the computer for more than 10 minutes. There seems to be some relationship with "sleep' too...running 10.4.11 and have it set NOT to sleep because of this, but it does anyway and then freezes and won't wake up (after left on for a while). I have run all the utilities including Onyx & they say all systems GO.. I do plan to work on it via Disk Warrior by connecting it to the G5...
Any ideas? I use a satellite ISP...This started to happen about a month ago...all of this sleep, freeze, missing port behavior...I have a lot of plugins for firefox as I'm an active twitterer (using TWhirl). so there are a bunch of new apps and online apps I'm beta testing too...there may be something here !
Thanks so much.
best to y'all
Liz

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