This only started happening a few days ago, I have no idea why.
Under Malware Protection in Windows Security Center, it displays
"Symantec Endpoint Protection is on but is reporting its status to Windows Security Center in a format that is no longer supported. Use the program's automatic updating feature, or contact the program manufacturer for an updated version."
I tried running the LiveUpdate, but it didn't solve the problem.
I am running Vista Home Premium 64bit with Symantec Endpoint Protection version 11.0.2010.25
Thanks for your replies..