Believe the hype when it comes to “approved” SD cards! I lost about 140 shots Saturday night, the most likely cause being a generic 1 Gb SD card I picked up for $15.
I’ve been using a couple of basic 256 Mb San Disk cards (the blue ones), several thousand shots without a problem. Saturday night was my first time using the generic, and shortly after completing a 100+ shots of a Rubber Doll performance (I was at the Dallas Fetish Ball), the display flashed the message “FILE CONTAINS NO IMAGE DATA”.
Five different recovery tools later, and I came to the conclusion that the camera essentially wrote over the files that had been there. Suck.
Learn from my mistake, spend a few extra dollars.