AntiSpam Definiton Updates in NIS 2010

I received my latest update on July 21, that's 5 days.  I know that's not the norm, but is there anywhere I can check to see when the last AntiSpam defintion update was transmitted?  I have found the Virus Defs and Security Updates  here, but can't seem to locate the same info for the AntiSpam Defs.

 

Thanks in advance for the help.