I had a query about the clock on my machine some time ago.
The general opinion was that the mobo battery needed changing.
I never changed it partly because the board was only a few months old but also because the problem seemed to rectify itself.
However this morning it had gained five minutes overnight so I reset it using Windowstime.com. That was at six this morning and it has been on all day (presumably therefore not requiring the battery usage)and in that time it has gained a further two minutes.
Does Windows xp run the clock when it is running or what?