U can change the wallpaper on all model other than 8900 n Bold I think. The only reason u cant do it on those is cause of the wallpaper effect. It actually slides from left to right as you slide from the first home screen to the second - just like on the G phone
N about the cuttin off bug, yes a few ppl have reported it and it has been fixed. Plz contact
and ask them about it and they'll send u a new link
Thanks guys!