Yes I did just get home from work

OK all the data in the database is intact, I've backed up a copy onto my machine, so no-one's lost any sessions.
The problem is with my wonderful web host, I'm trying to get them on the phone but no answer as yet... my other sites are down as well, it's definitely their end, my code isn't even being executed!
So this is a different problem to what happened to the GPS-SS guys, that was an SQL injection attack, this is just my host having 'issues'.
Will keep you guys informed...