[Blackbrook Eye]

Since writing this thread I have done a bit of research on the net regarding the problem and find, through various Canon user forums, that it is a common problem with the 40d, which makes me feel no end better (not). It seems that the only solution is a return to Canon, trust me when I say that the others with this problem have tried every solution in the book, some being the obvious ones and some being definately in 'don't go there country' and in every case the faulty cameras have had to be returned to the manufacturer. Canon are keeping very quiet on the subject and it seems no one can get any information from them, which I find a bit disheartening.