Error 18456: Login failed for user. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors.

This is a new error in this environment when I tried to logon, SQL Server 2008 SP1 Standard Edition 64-bit running on Windows Server 2008 R2. The complete text of the error is: Error: 18456, Severity: 14, State: 11 Login failed for user 'DOMAINuser'. Reason: Token-based server access validation failed with an infrastructure error. Check for previous errors . But there were no issues to access the database information on this instance, other than this annoying error reported via monitoring software...(<a href="http://sqlserver-qa.net/blogs/sql2008/archive/2010/12/08/9788.aspx">read more</a>)<img src="http://sqlserver-qa.net/aggbug.aspx?PostID=9788" width="1" height="1">