I just bought 6 Kingston 2gb sd memory cards for use with my n800, but 3 of the 6 will only allow me to write to half a gig. The file manager shows 1.88gb total and 1.48gb free, but when I try to write to it, I get a message that there is not enough memory available. Does anybody have any suggestions on how to access that 1.48gb? Has anyone else had this problem?