NB pre-beta build 200502180835, JDK1.5.0_02.

I have created a macro and replayed it, and the
IDE deadlocked. Full thread dump attached.

I think that the following happened:
1. In the AWT-EventQueue-1 thread,
BaseDocument.insertString acquires a write lock.
2. In the AWT-EventQueue-1 thread, an attempt is
made to lock object 0x880637c8 (at the top of this
thread).
3. In the editor.completion thread, object
0x880637c8 is locked.
4. In the editor.completion thread, an attempt is
made to acquire a read lock on the document, which
will wait until the write lock is unlocked, which
cannot be unlock untill object 0x880637c8 is unlocked.