Well here goes:

I bought an n800 recently and have been enjoying it for about a day, looking at the different apps I could put on it and what not. Long story short, I slipped one of my 2 GB SD cards in the external memory slot, and I get the infamous "Card is corrupt or unformated" deal. I plug my tablet into my PC and format the SD card from there. Same message again. I then put in a 512 MB card with some pictures on it. I could view the pictures, but as soon as I plugged the tablet into the computer, my PC crashed. I rebooted, and looked at my n800, and again the Card is corrupt. I try to format it from the n800, which was another waste of time. Finaly I tried the stock 128 MB and tried to put music on it, only to be forced to restart my computer. Again. What am I doing wrong here?