Yeah I scratched mine a tiny bit too, also not that noticeable on the very thin edge between the inside gap of where you open it. It's in that exact same location as what the OP describes. I felt a little gutted when that happened.
Opening the case of this phone can be a struggle at times. This is probably the hardest back cover case to open of any mobile phone I've had... Probably my only complaint about this phone..
I guess if in future the back cover becomes really scratched. You can buy a replacement for 5-6 pounds. I believe in 4-6 months time you'll find them for cheaper now and that way you can replace your old cover.

Edited by BLaZiNgSPEED, 14 May 2012 - 02:21 PM.