Can anyone suggest what might be wrong with my D5100? From new, it would simply freeze - it would turn on, but I could get no other response, couldn't depress the shutter release, nothing. After a while, it would work again. The problem would reoccur particularly when I changed settings frequently - I was leaning how to use it and experimenting with new lenses. After several months it was freezing for days, finally 10 days before the company I bought it from (unfortunatley in Hong Kong) accepted its return under warrantee. Apparently neither the company nor Nikon in HK can find the problem - luckily, it did freeze for them too, after working intermittently. I tried all the usual things - turning it off, removing the battery and cards - but to no avail. I am not happy with the company's response that I must expect that it will 'go a little crazy sometimes'! Can anyone help Nikon, Camera Paradise and me, provided I ever get my D5100 back - it has been nearly 5 months now.