Host updated SQL and PHP now a Database Error

I want to add that as far as I know my information in the config.php is 100% accurate. It has worked fine for 2 years. The problem only came about after my host upgraded PHP and mySQL.

Is there anything I can do to fix this?

I tried a new install for the heck of it. Used fantastico to install and the same error occurs with a new install in a different directory.

What could this possibly be? Something wrong with my host?

99% sure is either something wrong with your host or your wp-config, double check your database’s password and/or contact your host.

Nothing is wrong with the config because I have not changed a thing. It worked for 12+ months no problem. Not until my host upgraded to Mysql5 and php5 did it suddenly deliver the “Error establishing a database connection” message. On top of that having a fresh automatic fantastico install get the same problem… is not a coincidence.

Does WordPress have compatibility issues with Mysql 5 or Php 5 that would be causing this?

Well, maybe your host changed the database info during the upgrading process? Check with them.

Turns out my host had a SQL socket layer down… or something like that. Issues was completely unrelated to wordpress. (Thank god)

Issues was completely unrelated to wordpress

That was very clear form the first sentence of your original post…