I cant seem to install "ESET Smart Security Business Edition " on this Vista SP3 32bit OS. I grabbed it this morning from the trial email link I received on Friday. The PC is up to date with patches from Microsoft. It happens to be a developer machine so has SQL Server Studio and Visual Studio 2005 installed as well Office 2007 and Outlook 2007. I launch installer and it prompts me through configuration items then starts installing. I see the installer get up to the "installing drivers" bit and then I see a window open/close very quickly in top left corner and then very soon after the machine hard crashes to a black screen. Two black screens as it is a dual screen machine. Can only restart by forcing a power down. From now on the machine crashes on boot before it reaches the logon screen. I have booted safe mode and snooped event logs and could not identify anything that appeared to be specificall ESET or related to ESET. I have booted safe mode and disabled the two eset services I can find in services then rebooted the vista machine still crashes on boot. I found the uninstall tool on ESET knowledge base and run in safe mode that lets the machine boot ok. Just for good measure i tried the installer again after a clean boot but it crashes the same way. Does anyone have any ideas ? I have sent an email to ESET support allready btw. Thanks for any suggestions, Rob.