I installed am using the newest version of ESET Mail Security for Exchange on a brand new SBS2008 SP2. Sorry, I don't have the exact version of ESET, if I run it, my server crashes. It was supposedly updated though...so I presume it was the latest version? Installed new MS security patches today: KB2412687 KB2449742 KB2497640 KB2503658 KB2506212 KB2506223 KB2507618 KB2508272 KB2508429 KB2509553 KB2510531 KB2511455 KB2506014 Dump file indicates failure happened with file ekrn.exe Immediate Blue Screen of Death whenever the user interface to ESET is run. Get about 3 seconds of splash screen, then blue screen. Removed ESET from startup (registry) and now server seems to be stable. Does anyone have advice on which update caused this failure? I like the product (mail security) especially for the anti-spam features, but if I can't make it work, then I'll have to find something else. Thanks.