I have been getting this:
A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: http://what.thedailywtf.com/assets/vendor-134ec4c7a99c947213a44af37e9ce02f.js:129
This is Firefox 31 on Ubuntu 12.04 on an Atom netbook with a 3G connection, so I might be be TRWTF, but it's still annoying!