According to our hosting provider, they are in the process of performing some "urgent and critical maintenance", and everything will be back to normal soon.
Apparently, HostV have decided to use Twitter for their critical outage notifications now, which is oh so fun and funky, but totally useless to me, since I generally don't access Twitter at work. Ever heard of EMAIL, HostV? Sure, it's a bit old-fashioned, but it also works and doesn't leave a stack of angry users.
Sorry about this guys. Had I known, I'd have given you fair warning. Hopefully it won't be much longer.