After installing BIS2010 a few things happen with Windows 7 64bit. First of all, the tray icons (next to the clock) start to show up missing. Sometimes a few reboots has them coming back and many times not. I've sort of figured out that enabling "Game Mode" fixes this as after turning this on some of the icons (minus the network icon) show back up. Disabling the BIS firewall will sometimes re-enable the network icon. Second, which sort of goes with the first is the BIS icon will disappear after a few reboots and then never comes back which makes it very hard to get to BIS without using the normal Start Menu program link. The third and final issue that I've experienced is that after the install BIS wants to do a full scan as a part of the "Fix it all" option. When trying to stop the scan I get a message (similar) stating BIS has created a critical error and has had to stop the service, please restart. It will usually do this repeatedly. These issues have been replicated on two separate machines (one dual core laptop, 4gb ram and a desktop with a quad core and 6gb or ram).
If needed I will try to provide more information; however, after installing and uninstalling I don't want my licenses blacklisted from Bitdefender because of too many installs. :-)
Hopefully I'm not the only one having these issues. I see all kinds of other issues people are having with the latest version. I've read and previewed the 2009 version that I bought several licenses of 2010 and at the moment I went back to something more stable.