have you loaded a song or do you have 99% just with empty song.
what live version are u using ?
i have the problem too with large songs but only eith 3.0.x versions.
2.0.x are fine.
i just bought a Griffin Powermate. Installed the software 1.5.2 under Win XP pro. I like to change the tempo in Live like if you do with mouse + shift button to change in 0,1 steps.
I set everything correct to speed up : Arrow Key Up + Shift and to speed down: Arrow KEy Down + Shift.
no i don´t have any of your problems. seems that you have found the problem now. my IBM Thinkpad can´t switch down the processor speed afaik but my 99% problem cause the whole machine to switch off after 10.-20 mins ! because of overheating. i played in the hottest clubs with 2.0.x, no ...