We have a few computers that run Windows XP and every now and again they put the date/time one month forward in time.
This just happened again today, putting the date to 20th September 2010. This is causing problems as the software that runs on these PCs date stamps records in a database.
I happens on at least two different computers that I know about, both are at different sites but in the same geological location and use the same ISP.
Both computers are relatively new HP machines (Both purchased this year, but at different times). They both have service pack 3 installed and have the Time Zone set to GMT. The Internet Time Sync is turned on and set to sync with time.windows.com.
I have ran a virus scan on both PCs that showed nothing. What could be causing this?