Hello, These are Dual Quad Core systems with 32 GB of Ram. They are normally running at 30% CPU during the middle of our workday. This was an unusal event which is why I was asking. Thanks

Hi, I recommend you to use Process Explorer to verify which exe eats CPU a lot. Process Explorer v15.05 http://technet.microsoft.com/en-us/sysinternals/bb896653 Xiu

Hello, On Exchange 2010 SP1 with RU5, using Forfront 2010 For Exchange: We had very high loading on 10/17/2010 (hovering above 90%) on all of our Exchange Systems (Mailbox Client Access and Hub Transport). This load subsided with the update of one of the Forefront Engines. Today with a very similar client and message load we are running at under 50% load. In the past I have had Virus Scanning Engine updates that have caused performance problems. Has anyone had a similar problem? Thanks

How is the server spec'd? I recommend 4 CPUs with a mbx that also is running Forefront.

I have seen similar issues and have had to tweak the amount of engines used by ForeFront. More engines you use the better but you have to consider performance too. - http://download.microsoft.com/download/d/c/3/dc375d40-3889-4871-be41-6037e596dd60/forefront_whitepaper_final.docSukh

Hello, These are Dual Quad Core systems with 32 GB of Ram. They are normally running at 30% CPU during the middle of our workday. This was an unusal event which is why I was asking. Thanks

Hi, I recommend you to use Process Explorer to verify which exe eats CPU a lot. Process Explorer v15.05 http://technet.microsoft.com/en-us/sysinternals/bb896653 Xiu

Hello, I know it was the store process. It just wasn't clear why it was using 100% nILL

Check the engine info I posted.Sukh

Hello, I know it was the store process. It just wasn't clear why it was using 100% nILL If it hasnt happened again, I wouldnt worry too much about. If its consistent, then run through the link Xiu posted when its happening.

Any update?