WTF! Do not check in optimizations! I assumed we where talking 7.9 here but apparently I should stop assuming people have some sort of sense. I'll give up my hopes of getting a beta out today.
Let me say this again: If you think something is neat it should not be checked in. Period. Stop using the repository like a bloody sandbox. And stop refactoring code. Generally just stop fiddling with things or I will have to make the repository read only.
Now back that out.