I'm running a set up that's about 3 years old now. Several workstations persist in showing the correct date but a time that's often 15 minutes advanced of real time.
Recently after a power off during PAT testing by the County appointed electrician a number of our Dell GX60 machines powered back up asking for F1 or F2 to access reset of date and time. I took this as a prompt to change the motherboard battery, did this and duly reset date and time.
Despite this the time displayed on some machines is 15 minutes advancd - any ideas please folks?
if you are running a 2k or 2k3 network.. in domain environment the worksations sync the time with the server... check your servers clock