I worked in the cellular industry for a very long time. Too long. Part of the job was to help customers troubleshoot their phones (“Did you try turning it off and on?”). Who knew this “skill” would come in handy later for something other than cell phones?
I sometimes get emails from WordPress users asking for help because something borked when they activated one of my themes. The offender is usually one of the plugin running on the website.
So for those of you who aren’t quite sure where to start when you’re experiencing a conflict on your site, start with troubleshooting your plugin. Here’s a great flowchart @scribu put together which helps you through the steps.