EDIT: I just loaded up a brand new 4GB card Patriot)... getting the same error message.

EDIT 2: well... that's... strange. I turned the N800 off, removed the battery, went to weep quietly in a corner (caused more by watching the Seattle Mariners lose miserably *again*), came back, put the battery back in, turned it on, loaded the card, no problems.

This silly N800 thing sure is touchy some times... .