I could only find a manual uninstall of NOD32 3.0 process document on ESET's site, and the suggested steps in this forum that I could find didn't work (ESET uninstall from Start, Programs) on a Windows 2003 server using NOD32 4.0. So if someone is aware of a manual process for NOD32 4.0 that would be great to see; I'm guessing it's mostly identical to the version 3.0 process, but don't want to assume. I had installed version 4.0.424 on a WS2003 terminal server and was working fine for a few days; now became unresponsive with lots of Event 2020 from the Srv service. Hard reboot, server wouldn't go past "Applying computer settings". Workaround was to boot into Safe Mode, set the ESET service to Manual, reboot server into normal mode. Uninstall NOD32 4.0, reboot, install NOD32 3.0.684.