My D2 reboots every so often. The only time I got force closes was a long time ago on a D1, I went from 5 screens back to 3 but moved all of the widgets and things the wrong way, I thought it started counting from the right so I moved most of my widgets that way and when it reset, it was trying to put widgets where screens had been deleted and went into an FC loop. If I didn't have a keyboard, I would have had to take it to the VZW store.
I hadn't considered the reboots being the fault of Launcher Pro because they didn't happen often enough to make me think about it, but it is happening more frequently now. Fede did post that it was written for 2.1 and that 2.2's Launcher is just different enough to merit a rewrite. This was almost 2 months ago, so he might be preparing a completely new Launcher Pro for the new way that Launcher 2.2 handles things. I just hope that Gingerbread and Honeycomb don't do this to Launcher Pro without at least picking up some of the slack.