Got my R Pi today, and downloaded the Debian Squeeze.
I have three cards: a Sandisk Extreme3 SDHC 4GB Class 6, a Panasonic Silver Class 4 24GB, and a Kodak 4GB class 2.
I followed the instructions to dd the image onto my cards (checked the SHA-1 first which was correct), first up, the Sandisk 4GB. I plugged everything in and connected the power and it just hangs on the power LED, not making any suggestion that it's going to the OK LED and booting up. So, I decided to try the Panasonic 24GB, the exact same problem happened. For both, i've tried re-inserting the SD card and putting the image back on, but to no avail. Then the Kodak one, and same problem again. So I tried downloading the Fedora distro, and same again, nothing.
Will this really be a problem with the SD cards or something else?