Any news on this issue? It gets very annoying (and dangerous), particularly when typing passwords.
Load Pidgin, Evolution and other applications at the same time, each of which ask for a password. Try typing the corresponding password for each prompt as soon as you see it (without cursing during the process).
I also found this link: http://brainstorm.ubuntu.com/idea/400/ People who comment there think this behavior is not only annoying but a security risk also.