Important: If you are not running 4.1.9r1 (released November 30th) or newer, make sure you read the associated information on upgrading to 4.1.9r1 before you upgrade to 4.1.10r5.
This release contains several bug fixes and some new features (updates to
rewrite plus a new VMOD:
session). We encourage all users on 4.1 to upgrade to this version.
See the change log for details on this and previous releases.