Yes, thanks for the docs Cath.  Keith

Thanks Jeff.  The initial it's set to be 150MB where it's restricted to a growth of 4GB.  Before we had set that limit (3-4 weeks ago) we had found it...

Microsoft has a Hotfix post Service Pack 4 that resolves my issue and the continuous growth of tempdb.  Please see link below:

Error Described:

http://support.microsoft.com/kb/909369

I am having a similar issue except that there is near no activity for this installation.  I've been watching the tempdb logfile grow 200MB in the past 2 hours with...