In lieu of having to come up with something interesting to say here, how about some interesting stuff that's recently shown up on the Atlassian Developer Blog:

• The Development Cascade -- Imagine one of those Russian dolls, except that each time you open a doll up, you find a larger one inside, TARDIS-style. Welcome to my afternoon. (Me)
• Finding State Leaks in JUnit Tests -- A unit test is failing when run as part of a test suite. When you run the test on its own, the test passes. These bugs are hard to track down manually because they do not 'fail fast'. The source of the error is some indeterminate number of tests before the error itself. (Me)
• The devil is in the details -- Why you can't GPL your Confluence or JIRA plugins. (Jon)
• Finally - a direct link to download the JDK! -- It's amazing how long this has taken. (Scott)