Windows XP Client Fast Clock

[Frapple]

Right, a few weeks ago a client machine's clock started going really, fast like 3 seconds every second. I couldn't fix it and it eventually go pushed off the to do list, just checked back and it has stopped.

Now two more machines have started doing it, they're on a domain so Internet Time tab is missing from time/data settings so can't synchronise them with an external source.

Any clues?

 

[Frapple]

They already are sync'd as far as I know.

Been messing about with the w32tm command, managed to fix one for about 30 minutes, then it sped up again