I have a relatively newly re-formatted XP professional PC (reformatted & re-installed 3 mths ago) running MS Security Essentials Its on a peer to peer network with a drive letter mapped to the shared public folder on a Windows 2008 Server (Login on Access) Whenever I click on the Drive Letter shortcut in Windows Explorer the system freezes for about 10 seconds - task manager shows MsMpEng.EXE hogging 80+% of the processor (often 90+%) I've tried telling Security Essentials to exclude that drive but the problem remains Very little installed on this PC (Office 2007, AutoCAD 2009, thats about it, and no prior anti-virus cos I reformatted & re-installed), Windows Updates are active & upto date

"NicholasBr" wrote in message news:8f5f5116-06df-4194-b5e7-cdbddd876386... I have a relatively newly re-formatted XP professional PC (reformatted & re-installed 3 mths ago) running MS Security Essentials Its on a peer to peer network with a drive letter mapped to the shared public folder on a Windows 2008 Server (Login on Access) Whenever I click on the Drive Letter shortcut in Windows Explorer the system freezes for about 10 seconds - task manager shows MsMpEng.EXE hogging 80+% of the processor (often 90+%) I've tried telling Security Essentials to exclude that drive but the problem remains Very little installed on this PC (Office 2007, AutoCAD 2009, thats about it, and no prior anti-virus cos I reformatted & re-installed), Windows Updates are active & upto date This is really the wrong forum for this - you should repost it in the MSE support forum at http://answers.microsoft.com/en-us/protect -- Noel Paton | Nil Carborundum Illegitemi | CrashFixPC | The Three-toed Sloth

Ok ThxNicholas

Hi, This is Windows 7 specific forum, I suggest to contact Windows XP forum for further help: http://social.technet.microsoft.com/Forums/en/category/windowsxpitpro The reason why we recommend posting appropriately is you will get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction with us. Thank you for your understanding. Regards, Leo Huang Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.