Allow user to cancel out of it. If it's a posting action, then maybe proactively Delete the post/comment that would have occurred, just in case.
Oops but it's difficult to delete it because you don't have the id until the server responds.
"My post has yet to timeout, it is likely getting some kind of connection, but super slow. Its been nearly an hour!
Kinda like a tarpit. Reddit accepted the connection I guess, but is responding slowly."
fixed this because it was annoying during testing
#93: Allow user to cancel the "please wait" dialogs