I got the A-DATA 8GB SDHC work w/patched kernel no problem. Like fanoush said, you probably have a incompat card. But also, I got a question. When you format and reformat(mkfs.ext2) the card, install and reinstall over and over, have you ever make the partition from scratch, or try format it from the PC instead? As, corrupt partition table could get you the same problem, regardless of how many time you reformat the card.