I've been having a lot of problems over the last few days since the latest upgrade - couple of odd issues with cookies being turned off when I'm fairly sure they weren't before, then a couple of sites complained that my browser wasn't accept cookies although it was set to, crashes every time I go into hotmail (works in other browsers), has crashed a few times when third-party programs (e.g. Steam) try to open a browser window. Yet it all works OK if I switch back to IE.