Several things have been done to the car. The main computer module was replaced early on. The computer cooling system was drained and recharged in case heat buildup was causing the screen problems. The wiring harnesses were inspected. I was told that Lucid even installed a program in my car at the instruction of the software team that would allow them to access my car's MCU remotely to diagnose what I was experiencing.
I have had very few problems that have not also been reported by other owners on this forum, although I must admit I have experienced a more complete collection of them than most others. In fact, the only problem I can recall having that I've seen no one else report are the occasional bursts of white noise from the right rear speaker. The other problems -- screen freezes and blackouts, doors not opening consistently, bass dropouts in the audio system, collapse of the soundstage, failures in the automatic opening of the trunk and frunk, Homelink hijinks, etc. -- have all shown up in posts by others.
However, now that I think of it, the screen blackouts and freezes have sometimes been preceded by other, less significant problems cropping up beforehand. For the past few days before today's wider software failure I noticed the charge port door was not opening when I pressed the button on the left side of the Glass Cockpit. In fact, several times I had pressed the button, watched it light up and then quickly go out, whereupon I would exit the car and find the port had not opened as it normally did. I could only open the port using the alternate method of pressing on its door.
I've also noticed a recent decline in service response. In the early days, when I would report anything, the service team was all over it almost immediately. The last few times I've called Customer Service, I've found their responses to be more in the vein of generic assurances that a reboot would make the problem go away. Knowing that this forum is being monitored by Lucid personnel to glean information on problems is one of the reasons I'm now posting in such detail here.