Nod32 is crap IMHO
small footprint - yes, but also it tends to get infections through... and once they are in there is no way to clear them ...
Last time I had to
a) clear the virii with CureIt (stand-al0one emergency av cure from drweb which is maybe better than Kaspersky and also russian... but no serialz for it)
b) as the disaster was big - several infections, lots of files ,etc ... reinstalled
Sadly that had happened with Avast HE also
, all this on a home PC I rarely use - mainly my wife and kids
Symantec & Kaspersky use many resources... AVG seems ok (no problems last 2 months). At work we used CA eTrust for 3y without problems... but v.8 had crappy interface so we switched to Symantec Corporate (you know, no one ever gets fired for buying Symantec software....)
We checked Nod also, but lets say their server software was.... CRAP.