After animating at the fastest speed, scrolling is momentarily impossible.

[dufour]

Witnessed on chrome 22.0.1229.94. After a fast animation, scrolling bounces back to the original location during a few seconds after the animation has finished, making it impossible to scroll. This does not seem to occur when animating on medium speed.

[dufour]

On Safari, the problem seems to persist rather than go away after a few seconds like on Chrome.