I've been using Nod32 v4.x on all family computers (WinXP\Vista\Win7) for a while now and have loved it. My current registration is good through 2013. Last week I got an email from ESET telling me I could upgrade to version 5 for free and included a link to Dload. The email said my current User Name/Password would be valid. "Great" I thought (foolishly). I went to the web site to read about version 5 and thought it looked good. I uninstalled my Comodo firewall and proceeded to install Nod32 v5.x. WHAT A NIGHTMARE. The new version did NOT accept my license and tech support has been useless. The thing that really gets me is that the moronic programmer put the User Name/Password dialog at the END of the Nod32 installation process instead of the beginning. I could have backed out of the install process when told my User Name/Password was invalid if they had put the activation at the beginning of the install!!!. Then I would not have to spend hours trying to uninstall/remove/reinstall. Nor would I have screwed up my pristine Win7 registry/OS/hard drive. WOW, is this rocket science or common sense?? Oh and BTW, if you reboot your computer while the message still says you are using an expired license it will uninstall the program upon reboot automatically leaving your computer without firewall or AV. I rebooted and walked away to take a nap which left my computer online w/o any protection for an hour. I'm really NOT a happy camper with ESET right now. Why didn't they just email me a virus attached and tell me to open it. Would have been less trouble!