Yes, I did, just now. "Bad Gateway" for about 10-15 minutes I think. I was sending a PM at the time and lost it.
Yes. It lasted for some minutes.
If you are lucky, by clicking "backspace" or "back" in browser, you may get what you typed.
Edit:
Down for few seconds here, but isitdownrightnow says bitcointalk..org down since 2 hours and 50 minutes ago. It's weird.
Sometimes you need to refresh the page to get updated date.
Current: “Last Down: 16 mins ago”