If you're running OS X Lion, pop open software update — there's a new version of your OS to install. Version 10.7.3 weighs in at 730MB, but offers few changes that the average user will notice. Apple's official changelog notes improved compatibility with Windows file sharing, a resolved Wi-Fi connection issue when waking from sleep, fixed graphics performance issue for older Macs running ATI graphics, eight new supported languages, and a few other bug fixes. There's also RAW image support for more cameras built-in and a variety of Active Directory Service updates, but for the most part, we imagine users won't notice any major changes with this update. If you're ready to update, you can download now — but run Time Machine (or your backup software of choice) ahead of time, just in case.