Using the newest X2 firmware, just one day's experience. Some motor control USALS hangups, sometimes calling up a satellite seems to be ignored. If I go into the USALS screen and select the "GO" button, then the dish gets the command to move. Tonight the problem was moving from 91 to 97, last night I could not move dish off 125W until I rebooted. (hadn't thought of the GO function at that time so I didn't try it then). Still some minor glitching in the SPDIF output on dolby channels, brief cutouts for about 1second, some static, then sound returns. And I wish they would fix that ALL CHANNELS thing, so the receiver stays on the channel list of the sat it has just scanned.
None of these are show-stoppers but hopefully they get addressed in a future firmware tweak.