I am new here and can not find any answers to my issue (from MSFT or Dell). I have a Dell XPS 9000,i7-920, 12gb DDR3, AMD Radeon 5850, Win 7 64 Home Ultimate. Everything was working fine until I installed Windows Live Messenger and that's when my issue started. My PC would freeze everytime I booted up and Windows Live started up. I would then have to do a Hard Reboot. Sometimes it would get past that and it would freeze when I opened up IE8, Firefox, Chrome, MSN. I reinstalled the OS and as soon as I installed WLM or MSN the problem would arise. I reinstalled the OS a 2nd time and do not have this issue (since I have not installed WLM or MSN). Is there a compatibility issue with the latest build of Windows Live Messenger/MSN with Win 7 64 Home Ultimate. I NEED WLM since I have a MSN account. Thanks for all responses.