Some motherboards just have faulty clocks. Even with nothing running no
clock except an atomic clock will stay accurate it will lose or gain time
somehow. Sometimes this is noticeable sometimes it is not. If its losing
time when you first turn your computer on then there could a ton of reasons.
But as usual check for trojans, spyware, etc.. If your logging onto a
network and only do it once a week, make sure your logon server isn't off.
Some login settings allow for the server your logging into to set your time.
I prefer to always run a time sync utility that every hour goes out and
syncs my time with an atomic clock. Its called Dimension 4
http://www.thinkman.com/dimension4 does not include spyware like some time
sync programs do. Have been using for years, works under 95 to XP.
