Hi, I am using Vista x64, Smart Security 184.108.40.206 and Outlook 2007. The OS as well as Outlook are up to date with updates. There are no other third party Add-Ons installed within Outlook. I use all standard settings in Smart Security with respect to Web/Email protection and I use multiple POP and IMAP email accounts in Outlook. FWIW, my inboxes are rather huge with thousands of elements in each. After installing ESET SS5 my Outlook has been crashing constantly. I periodically receive the message "Outlook encountered a problem and stopped working" then "Outlook is restating now" (I use the German version, so I don't know the exact English wording). This continously happens every 5-30 minutes. I'd be really happy to find a solution for this as this problem is quite annoying. Any help is very welcome. Thanks!