^A (select all) works ok with one application. But if you accidentally bounce on the key, FreeMind will hang. Killing the java process seems the only way out.
(It's especially annoying if you've been switching screens with tmux or screen all day and do the same ^a^a sequence on FreeMind. But that's not a bug in the program. :) )
OpenJDK Runtime Environment (IcedTea6 1.9.8) (6b20-1.9.8-0ubuntu1~10.10.1)