Distribution/Version: ubuntu hoary

Start typing text in the URL.
There is a slight lag before the complemention list pops-up. This lag is
actually very noticeable, even though it is small. Also, if the user hits the
"down" key before the list pops up, the focus will move away from the URL bar,
confusing the user. I personally had to adapt to this relative slowness which is
a step may most people may not be willing to take.