After I've update my OS to Mavericks.
Terminal goes really slow, I've found out that the problem must be from Xcode.
While I remove Xcode from my computer terminal works fine, and after I installed Xcode, it goes slow again.(It takes like 2 second for ls command)
Please help.
PS. my computer is MacBook Pro with Retina.
Best Answer
I had the same problem to and I was looking for the way to solve it.
Checking at the issue that Adam Albrecht commented, it looks like the problem was being caused by the zsh vi-mode plugin in combination with the apple provided git.
Installing git from homebrew solve the problem without having to deactivate the vi-mode plugin