Fixing bugs is mostly considered the least favorite part of open-source projects, which often delays a good project growing into a great one. And this is a pity, because fixing bugs can really be fun and is very educative.
The Bug Hunt Day is planned for November 8th (2008) for those in the Netherlands. Here's how it'll go:
A typical BugHuntDay is started with a small presentation by a code contributor to that framework or library, followed by a group effort fixing bugs while being assisted by experts. This way attendees learn a bit of the framework or library, the process of fixing bugs and the process of quality assurance (QA).
If you're around the Roosendaal area and want to participate, check out the Bug Hunt Day website and find out how to get involved.