The only "problem" I'm having is that my battery life has decreased significantly. I did a calibration and nothing has changed. With blur, when the battery gauge went down, and I rebooted the phone, it went back about 15 to 20%. Granted, this was certainly an error on blur, but it did work and I would get a good day and a quarter out of the phone. Now, I'm getting more like a solid work day.
Other than that, I absolutely love cm7. Very smooth, fast and reliable. I have not had to reboot at all in the past week. With blur, I rebooted 4 times in two days.
Droid X2 CM7