Since I applied the 2.1 update (manually) I have had all icons and widgets disappear from my home screen 2 times. Each time it was after updating an app in the market (Easy Spirit Level, Bluetooth File Transfer, and Astro). I updated Easy Spirit Level first and while it was downloading and installing I set the phone aside. A couple of minutes later when I woke it up and hit Home I was left with nothing but a picture frame widget; all other icons and widgets were gone from all 3 home screens. I rebooted and all was well.
Next I updated Astro and Bluetooth File Transfer and did the same thing, let the backlight time out. When I woke it back up and hit Home this time, everything was gone from all 3 home screens. Again I rebooted and all was well again.
I tried installing a new app to see if I could replicate it that way but didn't have any trouble.
I'm wondering if it has anything at all to do with the market or just coincidence. And if it is market related, is it exclusive to updates and not installs? And... if it is updates, does letting the phone go to sleep while downloading and installing have anything to do with it.
So, anyone else experiencing anything along these lines? If so please give as much detail as possible so we can try to pinpoint the cause.