I have a 2gb ADDVA 150x speed SD card. Whenever I take a picture, or try to record a movie it says card error. When I try to format with my S3 IS says cannot format, I took it out mounted it on my pc, and tried to format there, still unable to do so. Anyway to fix this? I thought flash components are invisible...

I think that tends to happen when certain brands claim their card is high speed. But when you use it, it will have write errors.

Did you just buy it? If you did, go back to shop and ask for replacement lor.

Happened to my 2GB SD card too and it was only less than 4 months old. But mine was a normal speed one. Forgot what brand was it already. The scenario happened just like yours, then eventually turned worse when both my camera and PC cannot detect it. Took it back to the shop and he replaced it for me with no questiones asked.

I bought it quite some time ago, after S3 IS launch. not sure if thats one year bought thru forum member that time was safe trader

try the memory card on other devices like pda?? maybe its corrupted