I'm using OS X 10.8 and lately I'm noticing that iTerm2 can sometimes be quite slow with opening a new shell. It takes around 5 seconds before I can do something. Might not seem a lot, but I work a lot in the shell so it can get pretty annoying.
I'm using ZSH with oh-my-zsh.
I've tried Terminal, uninstalling oh-my-zsh, clearing everything unnecessary from the startup files (.zshenv, .zlogin, .zprofile, .zshrc, .zlogout) and clearing the ASL-files in /var/log/asl and although it goes down a bit (like 0.20s), there's nothing that brings it down to pretty instantaneous or even below 3.0s.
Does anyone happen to have another idea?