I got this with my SS S2, well I had lent it to a friend as I have an AL S4 and he said it froze with the Apple logo. When I retrieved it I couldn't get it to reset. I got genius bar appointment and weirdly in the Apple Store it suddenly started working again, but then relapsed to the Apple logo - all this in front of the Apple staff.
To cut to the chase, they said it was a software fault and put it in for repair. They said I shouldn't pay for it, but if they determined it was my fault then is would cost €250. In any case, they replaced it with a brand-new S2 SS, picked it up last week.
I was kind of hoping they wouldn't have stock and might have got an upgrade, but no. In any case it's another vindication of Apple's excellent customer support - to replace a product when it's nearly " years old is exceptional.