It's not all the time.. Only sometimes.. Like this afternoon when someone was watching me come in the driveway and it stalled. Then I started it again and the revs started goin from like 100rpm to 800rpm and then I just kept revving it till i got in the driveway, got out, slammed the door, put the alarm on and left him have his little tantrum.
It used to do it and then that problem was fixed, but I can't remember what it was.