Is TMG 2010 blocking google.com for a malware threat ?

Refer this thread.
http://social.technet.microsoft.com/Forums/en-US/Forefrontedgegeneral/thread/e8eb8300-ecdd-4b23-b6df-f6ac0a67a226

it has to do with the Malware signatures downloaded from MS. This has been fixed as i write this.

Microsoft TMG needs a restart after installing Root Chain certificate

After installing a root certificate from Entrust and the Root Chain on Microsoft TMG, i was still getting the "CA Untrusted" error when connection over Outlook Web App frome the internet. Talking to the Entrust support folks, said they required a restart especially if a Root Chain cert is installed.

A restart of the TMG and all started working with Outlook Web App.