I'd really appreciate it if you'd try it's kickdown right after firm braking next time you're really bored on a straight lonely road.
It's beginning to look like the only folks with this problem are 07 328xi owners, Wouldn't surprise me if it was only the early builds.
I want BMW to fix mine. If we can isolate the common aspects we may be able to lean on them a little. I don't have to stand on the brakes, then floor it very often, but it does happen, & I want to be able to get out of the way if I need to.
This news article from 2006
http://www.autoracing1.com/htmfiles/...4BMW3Coupe.asp
talks about the new 6sp Steptronic & how wonderful it is. (at least for the 335 guys!) Theirs is a -TU for Technically Upgraded.