I have a HP NC6000 laptop running on Windows XP service pack 2. Recently my clock starts to get out of sync. My auto synchronize is turned on and I am able to update the clock with no issues. However, after a while, the clock starts to lag. I have scanned my laptop for spywares and found no issues. I installed 3rd party client NISTime, but still doesn't solve the problem. Anyone have any idea what is wrong? Thanks for the help in advance.