If you do have the toggle on yuor keyboard, I'd like to know if it does work better for recent builds (which you can downlaod w/o needing to do anything fancy besides replacing TextMate.app).
I usually don't like to live on the complete bleeding edge, so that's why I wait until "official" releases. But I "installed" the new version. I don't have a toggle, however, sometimes all the numlock+capslock +scrolllock keys light up for a second and the keyboard won't accept input, I take it that's when stuff goes bad. So I'll let you know if it seems better, it's just a matter of waiting a while and see.
Andreas