I'm having this frustrating, random issue.
I take several photos, take out my card, put it in the reader, insert that into a slot on my PC, and when I open the card to extract the pics, the card is immediately empty with an error that it is corrupted. Then I have to reformat it in the camera. It works fine in the camera; I suspect the issue may be with my PC.
Camera: Nikon D90
Card: Transcend 16GB
Reader: USB stick/reader that came with the card
OS: Windows Vista 64