The only issue I'm having is with the app drawer. It's taking about 70 seconds for the icons to even show up. I do have a lot of apps, most of which are installed on the sd card.
do you happen to experience no icons when you come back out of sleep mode? When I press the power button to wake the phone and enter my password my phone sometimes has no icons on the homescreen and I have to wait 5-10 seconds before anything shows. This has happen on many different Roms not specific to UD. (I have a droid).
pretty common with froyo. i thought frg22d fixed it but it still comes up once in a while. try turning off your animations and see if that fixes it. i used to have that problem and it seemed to go away when i turned off animations.
also if you are on LP, go into advanced, memory, memory presets and set it to low. i have this setup and the only time i get redraws are when i take the phone out of the dock.
i also had the app problem, i was using the 3d launcher and was getting some hesitation when scrolling and a couple redraws. i switched to the 2d launcher and have no problems. the phone is running top notch still after a day and a half. lets hope it keeps up.