On my machine running kubuntu 13.10 I have Clamav installed.  Yesterday 
I checked my email and found one of those spams with an attached zip 
file. I scanned the file with Clamav and it didn't find anything.  This 
tells me I should get another antivirus program for this beast.  Any 
suggestions as to which one would be a good idea to try?

Thanks

-- 
"I get my copy of the daily paper, look at the obituaries page, and if I’m not there, I carry on as usual."

Patrick Moore