I've experienced 3 issues so far:
I am experiencing the youtube issue intermittently. For a video I will first get "Video cannot play" then it will play the 2 nd time but without sound until I press volume up (and no it was not on silent vibrate or mute) and then the sound will play.
The contact pictures in the contact tab will start off as crystal clear but on the next slide to that tab they will be very fuzzy. If I replace them they start off clear again and then go fuzzy.
And finally my phone now gets really hot really fast whenever I use wi-fi. On the plus side my opera and ie are running faster than any ROM i've tried in recent memory.
Other than these few things the rom is very smooth