I've experienced some strange behaviour from my Canon EOS-350D a few\ntimes, and it happened again yesterday. At first it won't shoot when I\npress the shutter button. I tried to change the program mode, turn the\ncamera on/off. Even remove and re-insert the memory card. I finally got\na -99 error message, whatever that means.\n\nAt last I decided to remove the battery, then put it back in which\nsolved the problem and I was able to take pictures again. Is something\nwrong with my camera or is this the sort of thing that happens\noccasionaly with digital SLRs?