I think the most annoying thing about McAfee is that it auto-deletes my tools from my flash drive (the false positive detection is pretty high). Most of the virus removals that I do here at the shop have McAfee virus "protection."
For example, someone brings me their infected computer. They are running McAfee and are plagued by your usual trojan fake-alert virus. I'll plug in my flash drive to run a few utilities that I like to use to begin the cleaning process, and all of a sudden my tools are gone because McAfee saved me from my evil tools! Why not delete the virus while you're at it, geniuses?
I just thought I'd share that. Any thoughts?