I also lost a 128MB MemoryStick as a reslt of formatting it in an internal card reader slot in my PC. The Cybershot P52 doesn't recognize it anymore, yet it's fine with other memory sticks. I also tried reformatting the stick with the Format M: /FS:FAT /A:8192 trick. The format appeared to work on the stick, but the camera still doesn't acknowledge it. But what I can do is transfer data from my PC to the stick and read it back from the stick using a Sony memory stick reader/writer. When I insert the stick into the internal card reader slot, I noticed that the WIndows assigned drive letter for that reader also went away. When I removed the stick, the drive letter reappeared. This does not happen when I tried it with the other memory sticks (obviously not formatting those in the PC reader slot). Any other thoughts?

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