On good recommendations, I tried the latest trial version of NOD32. The virus checker itself seems solid. NOD seems to use few system resources. The 'odd behavior' part: It intermittently flags problems with boot sectors of various drives (that will put a shot of adrenaline in your morning). This doesn't always happen, but it's worked its way up from flagging one drive to flagging six. The other thing that I believe is caused by NOD32 is a shutdown message about Drive A (floppy) not being ready. Windows shutdown looks like it's proceeding as always, but then a popup gives the message and hangs there with 'continue' 'retry' options. There are some things that inspire confidence in software, and some things that don't. I told NOD about the boot sector errors a while ago and the reply wrote them off as 'problems with a boot manager.' Rather cryptic and somewhat dismissive. I'm not sure why the inconsistency either...they should be reported constantly if NOD32 thinks there's a problem. Anyway, I think the other contenders may be Kaspersky and Trend. Are there others to consider?