Apple has bumped GarageBand to version 6.0.1. In addition to improving the software’s overall stability, the update addresses an issue with undoing Flex Time edits, removes occasional latency on guitar tracks, and restores the ability to use Quantize Notes Timing for tracks with Groove Matching. (Free update, $49 as part of iLife ’11, 47.5 MB)
Hide TextExpander in the Dock
If you don't want to see TextExpander's icon in the Dock and the application switcher, you can remove it. Just open TextExpander > Preferences > Appearance, and select Hide TextExpander Icon in Dock. You'll still be able to access TextExpander from its menubar icon.