I work IT for a college that used to push out McAfee Enterprise to all desktop machines. We
switched our license/subscriptions/contract and pushed out Sophos right now.

McAfee would randomly mysteriously break and be completely unable to update its scanning engine or dat files, and out of THOUSANDS of desktop machines we'd have a bunch of them with definitions from months or years ago. Which ones? Hell if we knew!

Out of this latest Conficker crap imagine our surprise that McAfee simply didn't recognize the USB variant! We verified that Sophos in fact detected Conficker and immediately pushed Sophos to all of the computer labs and instructor stations.

And I still gotta remember back to the silly password-"protected" FTP of NAI/McAfee software.

So basically, McAfee is truly incompetent and I'm glad to see it gone on our computers.