All the Ubuntu MATE servers, including this Discourse forum, have been migrated to new hosting. And for a very good reason.
Bytemark are a UK based hosting provider. Some of the tech team at Bytemark are using Ubuntu MATE and their CEO reached out to fully cover all the Ubuntu MATE hosting and bandwidth costs! A significant advantage of this sponsorship from Bytemark is that more of the money raised via the Ubuntu MATE crowd-funding can be directed towards sponsoring the development of Ubuntu MATE and the MATE Desktop
So we now have two servers, one in Manchester, England and the other in York, England. The main websites and download servers were migrated last week and this Discourse forum was switched over earlier today.
We'll be updating the website content tomorrow to reflect that Bytemark are now sponsoring the project. Bytemark and Ubuntu MATE will both release announcements about this partnership in due course.