We are currently aware of issues with web-21, web-13 and web-11
23:40
These servers share very few if any similarities or back ends. It appears that these servers are currently the subject of DDoS attack which we are in the process of blocking.
We will update this post with more information as it is available
23:50
We believe we have blocked / resolved the flurry of attack traffic using our internal DDoS mitigation technology. Security patches have also been applied to the affected servers and a reboot effected where required.
Please accept our apologies for any inconvenience caused by this brief emergency maintenance