Looks like it has screeched to another halt ?

Yep mine down as well with following error:
 
Page URL:
Referrer URL:
Database error: Connect failed: Can't connect to MySQL server on 'hosting-db' (4)
MySQL Error: Connect failed: Can't connect to MySQL server on 'hosting-db' (4)
 

Mine too :(

It's back, have you sent request to support?

Dear users,
 
These problems with database connection were caused by our hosting provider and their internal tests with network routing so we couldn't do anything with that and only wait when they fix the problem. Anyway the issue was resolved within an hour and we hope they won't do such unexpected tests anymore.
 
Sorry for any inconveniences and thanks for your patience.
 
Best Regards,
ViArt Team