The site is really slow today

The site has been really slow for several hours now, it sometimes takes minutes to load a page and just now I got a "
Gateway Timeout The proxy server did not receive a timely response from the upstream server.

Reference #1.651f1602.1503334075.410f9ec" message from the browser when trying to go on Last.fm. I have the same issues on several browsers and devices so I'm guessing the issue isn't on my end.