I'd usually suspect JavaScript was disabled but if that were the case you'd probably had noticed long ago.
Do you have any plugins installed? Does it behave differently if you disable them? How about if you restart your browser?
Speaking of, which browser are you using? Have you tried a different one?
Do you have any plugins installed? Does it behave differently if you disable them? How about if you restart your browser?
Speaking of, which browser are you using? Have you tried a different one?