Got home yesterday evening at about 8pm and noticed one of the filesystems had gone into read only mode. This was due to a safety feature when an issue occurs with the hard disk.
I took the server down (uptime of over 1 year 2 months), booted it in rescue mode, made a backup and start investigating. The HDD has started to fail and it had also overheated.

Swapping out the HDD, reinstalling the OS and restoring from a backup is going to take time. Time that I don't have at the moment, due to an event this weekend. It's going to be at least 10 days until I do. Unless someone else wants to take care of it.

So I've put the server back online for now, with minimal game servers running, sorry MC is down.

The server should be OK for a while..

Services limited to;
HH2, HH4, mumble, apache, mysql.

Thanks for the update Frog. I'd help but I wouldn't know where to start and would probably be more of a hindrance than a help.

Thanks it couldn't have happened at a worse/busier time. Right pain in the arse.