Here's something strange. When I was hacking together my USB kit to connect the keyboard, the "does it work" testing I did showed the occasional repeating/stuttering, which I reported.

Yesterday I started working on an xmodmap file that would map keys to the actual layout of my keyboard... this is another level of strangeness altogether, and I don't claim to understand any of it ; but the thing is, this entailed several lenghty "where's-my-key" testing sessions, and during the entire process, I don't think there was *one* repeated keystroke...

Dunno if it's anything to do with xmodmap itself, or if it's one of those phase-of-the-moon-type coincidences, though.