I have a new Vista stytem (Gigabyte GA-EP25-DS3, Core 2 Duo E8500, 4GB RAM, Radeon X1800 GTO, Vista Home Premium SP1) which runs well 90% of the time. But sometimes the system freezes for 5-10 seconds. The main symptom is that the mouse stops moving (actually it "leaps" every couple of seconds) but I think that windows stop updating also. During this time the CPU usage goes to 50% and stays there. I tried leaving task manager open hoping to see what used the CPU cycles but of course that window stops updating for the same period.
One sure way for me to trigger this is to open the 'Computer' window by double clicking the desktop icon. The system freezes for several seconds while the right hand pane updates. Then every time I click on "Computer" in the left hand pane it happens again. I've got two SATA II drives (three volumes), a DVD RW and a card reader which shows up as four removable disks. I'm on a home network but don't have any network locations mapped to local drive letters. I don't think that this should bring Vista to its knees.
Confusingly the freeze also appears to happen on some websites.
I've checked that I have the latest BIOS (I do except for some beta versions which I have kept well clear of) and have updated the drivers for the chipset and video card. I've changed from a wireless mouse to a USB wired mouse (no difference). I thought about updating the mouse driver but I'm using a very generic mouse and I'm not sure where to find a newer driver. I've also disabled everything that loads at startup (including AV/AS/FW etc) but again no difference.
Now I'm all out of ideas. I would appreciate help in tracking down the problem. This system shouldn't be getting bogged down like this. Thanks.