This question: https://stackoverflow.com/questions/5535903/how-do-i-quit-telnet-in-iterm now has 6 close votes, and has been down voted.
When I added the sixth close vote the popup said just "close".
Something seems to be stuck.
Additional: Here's another one: https://stackoverflow.com/questions/5539283/windows-server-2008-r2-sp1-fails-to-install-with-error-0x800f0818
And this time I remembered to capture the popup: