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Maybe I should send a handwritten letter to DMOZ corporate? Don't laugh, now that I think of it, that's a good idea.
We welcome all ODP discussions that are about the ODP. Personal site listing discussions need to be taken into email or other avenues.
The best way to update an ODP listing is by the official channels there. I've had great (cross fingers) luck submitting and updating (hundreds of listings for clients). I've only run into one problem editor, and that was fixed when the editor was let go.
I agree with Pshea. Go the official route and wait at least three weeks, then one email to the editor, if that doesn't work, go up the food chain to the next highest category all the way to a top level meta editor if need be. Folks can be very friendly over there. It ain't Yahoo (Thank Goodness).