Well, the good news is that the causes of reboot loops in the past were fairly simple, so fixing them wasn't horribly difficult. SSU really isn't a bad system, it's just that Nokia's crappy testing procedures (basically, "apply update to freshly flashed tablet" which, of course, works perfectly) and the limited nature of these devices (running out of space on the rootfs isn't a fun thing to do) combined for some very nasty results.

Nokia's new to this game, and they still don't fully understand SSU, but slow progress is being made and I think we'll be somewhere pretty good by the time Fremantle hits.