Can anybody help? 2

I have a NOKIA 5200. It is a good mobile and have been giving me very satisfactory service. But for some days it has developed a problem in its camera function. Whenever I click to take a photo, sometime it will be OK but sometimes a message appears – “unable to save the file”. It is very frustrating. I have tried all suggestions given by my friends. As per one suggestion, I have switched the mobile off and then switched on again, but the problem remains. As per another suggestion, I have deleted all files in the memory and then tried to take photo, but the problem is still there.

Can anybody help me? What can be wrong with the mobile and how the defect can be removed. I have also sent an e-mail to NOKIA technical support and waiting for their reply. Thanks in advance.