Apple has pushed out GarageBand 6.0.4, introducing a few minor changes in addition to the usual “overall stability and performance” fixes. Of note, GarageBand’s Lesson Store has been changed to fix an issue that was preventing lesson downloads from completing properly. On a more practical note, the update also addresses a bug that caused some tempo-based effects to fall out of sync with the main song, as well as a problem with Magic GarageBand projects not opening properly in the tracks view. ($14.99 new from the Mac App Store, free update through Software Update or the Mac App Store, 53.72 MB)
Single Time Machine Backups
Tired of Time Machine running all the time? You can turn it off in the Time Machine preference pane, but still initiate a single backup by choosing Back Up Now from Time Machine's menu bar icon. Of course, your backup is much less likely to be up to date, but Time Machine won't be taking any resources while you're trying to work.