My less than 3 month old Sandisk III 4GB seems to be running into problems. I had only taken about 50 shots in Raw and then it stopped working. The screen just shows CF card full when I know it is not. I have downloaded the pics and they look OK still. But the card still shows full in the camera. I did an in-camera format of the card and now seems to be OK. Should I bring it to Sandisk? How is their support like? I have used Ridata, SanDisk and Lexar. And this is the first time a CF card has given me problems.