As you'll see in this thread a few of us are having issue with ESET NOD32 on Windows 2008 server Nod Anti Virus Server Hangs

I'm very happy with it on server 2003 and our desktops so I don't really want to swap everything now so i'm thinking about trying something else on my 3 2008 DC's.

Can anyone recommend an alternative product that I could buy three copies of for a reasonable price? I don't want to leave my boxes unprotected but I have active scanning turned off at the moment.