my sd card readers in my n800 has stopped recognizing and mounting sd cards. im hoping its just a software issue. i know my sd cards work since i checked them in a netbook. i recently installed telescope, the maemo 5 theme and tear and about this time i lost sd card access. is there anything i can do?
edit fixed on reboot.

uhh i assume you must have restarted it properly by now since the SD is behind the battery anyways. try cleaning the SD contacts on the n800 with rubbing alcohol and a q-tip. try restoring the n800 to an earlier backup or reflash the whole thing.
if you happen to be good at taking things apart, google image search "n800 solution", there's lots of stuff like this

(sorry i know you said n800, but you get the idea)

I have met the similiar issue before and I just reflashed my N800 ...