This one is more or less a maintenance patch based on issues reported in this mantis issue. It should be a help to performance in general, though, even for folks not affected by the core reported issue.
More to come soon. Enjoy!
This is a standard update that you can download through the
in-game updater itself, if you already have 0.500 or later. When you
launch the game, you'll see the notice of the update having been found
if you're connected to the Internet at the time. If you don't have 0.500 or later, you can download that here.