Hi, Its a 2GB memory card stick due and after I fill about 1GB of it, I cant copy no more over it and gives me "DATA ERROR "cyclic redundancy check"" It was working great before so its not a fake. (dont give me that eBay stuff) But if I copy data from the memory over it, it works ok and goes over 1.5GB (copying files that are already in the disk on other locations of same card) I tried another machine, same error. Is there any software to diagnose Memory Stick Due? and show possible bad sectors? Thanks in advance. p.s. I'm using PSP's USB CONNECTION itself to connect it to my computer.