I've installed the trial version of ESET NOD32 Antivirus two days ago, and it is still unable to update it's virus definitions database. Tells me the following: Virus signature database could not be updated Invalid Username and/or Password The related fields in the setup are blank, of course - it is a trial version. At first I thought it is a transient server-side glitch that will be fixed soon, but the message is still there and the database it still stale. So, is there any way to look how the software works before purchasing it? Running it with outdated virus databases hardly makes any sense. A pity, because the first impression was positive.