I have 5.0 and have only had a few glitches, which resolved themselves. The first was the phone not coneecting properly...resetting the computer and re-pairing the phone fixed this. The second was more bizarre--the HUD displayed a message advising me that my vehicle needed service and to contact Tesla Service immediately. The error message was displayed on the dash screen, bottom, center just below the speedometer. On the 17" screen a red "!" icon appeared at the very top, which when pushed displayed the same message. I got out of the vehicle for a while and then upon getting back in to drive again, the message was no longer displayed and all appears back to normal. I called the SC and Jimmy said no errors were reported and thinks it was just a glitch in the firmware.
I thought the car communicated all errors to Tesla/SC? When I first got my car, the airbag light remained on for days. The manual says to contact Tesla immediately. When I did, again, they had no notice of this error. It turns out that the driver's seat belt wiring harness was unplugged--likely from the factory (or it was seated but not pushed in and worked it's way loose the first day of driving. Not sure how that one was missed and why my MS didn't report the problem. You'd think anything prompting the airbag light to come on would be grounds for notifying Tesla.
Puzzled.
All in all, I'm pleased with v5.0 My vampire drain is 3-4 miles a day on average.