Hello, A month ago I still had A very old version of Remote Administrator on my SBS 2003, and all my 30 client computers had NOD32 2.7 running on them. Everything worked just fine. Then we decided to install the new Admin Console (without Exchange) on our new Server 2008, and pushed the installation of NOD32 Antivirus 4.2 to all the clients. Some computers managed to go from 2.7 to 4.2 without a hassle, but we have about 10 computers that keeps me working late. Some of them freeze about 2-3 times a day. Some of them can't get the Outlook to update its folders form the Exchange server. Some of them stops browsing from time to time. All have to reset to rectify things. I tried disabling the Outlook integration - didn't work. I tried removing the NOD32 (using ESETUninstaller in safe mode) and installing it again from a exe file (not remotly install it) - didn't work. These specific clients has no special configs: they all have WinXP SP2/3 and they have Office 2003/2007. The only identical thing about them - if I uninstall 4.2 and then install 2.7 - everything works great. So... Weird, eh? I'd appreciate any ideas and help. Thanks a bunch!