Sony Ericsson :: W890i / Unable To Save Photographs

MY w890i camera stopped functioning normally in June. I didn't really need a camera so I just assumed I had goofed something up & didn't pay much attention to it. Now my real camera is in the repair shop & I set about figuring out what I goofed with my camera phone and can find nothing. I have it set to save to memory card. there's a 2GB card in there that has very little space used on it (less than 500mb) but when I open the camera function and take a picture it does one of two things: a) makes the shutter noise indicating a picture was taken, then the screen turns gray,the word "saving" appears in the middle and then the screen goes back to the ability to take a picture or b) i hear the shutter noise indicating a picture was taken & then the screen goes back to the menu. When the camera was working properly i would hear the shutter noise, get a gray screen with the word "saving" in the middle and then the picture would display on the screen until i pressed a button. Anyway, I hooked it up to the computer & it downloaded an upgrade, that didn't help, I re-set factory defaults, that didn't help, and finally I plugged the phone into the SE PC Suite & ran "phone repair" that too did not help. I haven't seen any similar complaints on any of the forums I've checked so I'd like to get some advice on what to do. Any advice would be greatly appreciated.