Error on new server

[eluser]GeXus[/eluser]
I've switched servers, well moving from Dev to production and I'm getting the following error message about 10 times when I go to the index.

All config items (database, base_url) are set for the production environment.

Am I missing something?

Thanks!

A PHP Error was encountered

Severity: Notice
Message: Undefined index: log_threshold
Filename: codeigniter/Common.php
Line Number: 298