Microsoft has updated Office 2011 to version 14.4.2 with just a few improvements. The release fixes a nagging bug that always required product activation after restarting a Mac with a Fusion Drive (though you may have to enter your activation details one final time after installing this update). It also provides two PowerPoint-related fixes — one for an issue that made the Undo button disappear after saving a presentation to a local drive, and another that caused YouTube link data to disappear after saving a presentation. (Free update from the Microsoft Download Center or through Microsoft AutoUpdate, 114 MB, release notes, 10.5+)
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.