When I went to update it the other day I noticed suspicious activity. My Comodo D+ starting throwing up all kinds of shady looking alerts. Sumatra was trying to take all sorts of liberties that I wouldn't allow anything on my computer to take... accessing the memory of things like (i.e. lsass, csrss, winlogon, svchost, etc...) basically asking to take free reign over my system. I was shocked, and naturally declined it all. I thought maybe upon trying to update I had somehow been redirected to a rouge site and got a bad install, so I made sure I was at the right site and tried it again... same results. I uninstalled it, and am looking for a new PDF Reader. Has anyone else noticed such activity?