I've bought 2 micro flash cards this spring. First (2 GB PQI) died after a few uses,the second (1 MB Kingston) appears DOA. Both acting the same now. Camera recognize them as defective. Ubuntu and XP won't recognize them at all (using laptop reader or flash USB reader on desktop). VISTA recognizes and says they are unformated. When I format it churns away for about 20 minutes apparently formatting them and finally comes back with "Can not complete format". Tech support (PQI & Kingston) say RMA them but shipping, gasoline, wasted time will cost more than I paid for them. The Kingston was from newegg and had 150+ satisfied customer reviews. The camera and readers all work. I checked them with a 2 gig flash card currently in use in the camera. All patches, hot fixes, SP's are up to date on windows. Is there some issue with micro units getting fried if you use them in a PC vs in a MP3 player, phone, etc? Don't want to waste any more money if these things have a problem. They were intended for an MP3 player.