I'm trying to uninstall NOD32 (v3) in order to install v4, but I get the error message that another application has exclusive access to virlog.dat. I have to abort the uninstall process. When I re-start NOD32, it tells me I have a serious problem (you bet!!) and I should re-install .. but I get the same error message about virlog.dat. So now I am stuck with no AV program. Hope someone can help.