Group Policy issues

I have 3 pc’s on my network that will not update with the group policy. Keep getting the following error in the event log:
Event Type: Warning
Event Source: SceCli
Event Category: None
Event ID: 1202
Date: 2003/09/12
Time: 14:03:35
User: N/A
Computer: machine name
Description:
Security policies are propagated with warning. 0xd : The data is invalid.
For best results in resolving this event, log on with a non-administrative account and search http://support.microsoft.com for “Troubleshooting Event 1202s”.
Tried the MS site for help but could not find anything useful.
Any ideas will be greatly appreciated