WordCamp Raleigh 2011 featured me talking about how to Debug in WordPress and how to file a bug report for WordPress. I talked about a number of tools that make debugging easier that everyone should check out. These tools are:
Xdebug – make your php errors look better and easier to fix
Log Deprecated Notices – Easily see in your admin area when plugins or themes are using deprecated functions, files, and arguments
Debug Bar – Firebug for your WordPress.
Debug Bar Console – add a php and sql console to your WordPress front end
Check out my slides for more information on WordPress Bugs: How to Kill Them