Roebeet, perhaps a little bad news in regards to 2.20, since there still appears to be something wrong with the new rom, 2.20.
Angry Birds and other apps are vanishing, just like they did with 2.03. Plugging in USB drives appear to accelerate apps vanishing. The same apps that vanished with 2.03 are now vanishing with 2.20. At least they appear again with a reboot, but USB drives cause them to vanish and you have to reboot to use the apps.
Seems that after using a USB drive, some apps vanish instantly and some like Angry Birds are there, but when you touch their icon, they force close and vanish too.
Already aware of this?