No luck for me either on 6.5. I even followed the instructions here:
http://forum.ppcgeeks.com/showpost.p...6&postcount=20
While I can get it to start up in 6.5, within minutes of either hooking up to exchange, installing anything, or running anything like Google Maps, the phone will freeze, I'll do a soft reset but the phone will do a hard reset. I've gone through that cycle approximately 5 times today (flash back to shipped Telus, hard reset, flash to MR5, hard reset, freeze, BOOM!!), always with the same result. Too bad because for the 10 minutes that it works, it looks really nice!
So now I'm on the 4R3BORN beta and it works really well. Thanks Mike!