On 2 PC's I noticed this:
While working normally, you suddenly hear a tick from the HD, and the entire system freezes. You hear the HD spin up again, and after a few seconds all works fine again.
The cause is NOT some powersaving setting, this occurs also when actively using the HD.
It happens at irregular intervals, a few times a day.
Nothing is seen in the event log, or using HD diagnostics.
When creating an image of the HD to a new one, and then replace the HD by this new one, the problem REMAINS.
So I don't think it is a HD failure.
The problem is there a few months now, and does not get worse or better.
The first PC has a Intel Server motherboard, the other a Soltek motherboard.
Upgrading from windows 2000 to XP did not change anything also.
I know it probably is the mainboard, but I would like to hear experience of someone had the same problem and fixed it...