If you’ve ever modified a WordPress plugin to suite your needs you know how frustrating the auto update feature can be. I work with a team of WordPress developers and we’re constantly dealing with lost source code caused by clients upgrading there plugins with the one click updates feature that is now built into WordPress. This is no fault of the client, as they should be able to upgrade plugins as necessary. The ideal solution would be to remove the auto update/upgrade feature on a case by case basis as needed.
Until now I have struggled with creating a solutions for this, but thanks to Mark Jaquith’s blog post, Excluding your plugin or theme from update checks, you can now do this with ease.