Keep getting an error - "An error occurred while attempting to connect to the database"
I've had Vanilla installed for years (since the early days of Vanilla 1) and mostly it's been absolutely flawless, but for the past couple of days I keep receiving this error:
"An error occurred while attempting to connect to the database" SQLSTATE[HY000]  Unknown MySQL server host 'mysql.database.com' (2)"
I have no idea what's causing this, the host has looked into it and can't see any problems, they've also created a test page for me (just a simple page with a link to the database, which saves an error log) and I've not been able to replicate the error.
Any suggestions on what to do please? I'll admit I haven't updated for a few months because there's no sticky thread any more to let us know when a new version is out - afaik I'm running the last stable released version