Rev up your Software Updaters, because Apple has released its first update to Mac OS X Lion. The 10.7.1 update is recommended for all Lion users and contains fixes for a number of sanity-eroding issues, and there's even a special 10.7.1 version for the 2011 MacBook Air and Mac mini.

The main update for those of us who don't own the latest and greatest Apple releases addresses issues that caused the system to hang when watching a video in Safari and audio to stop working when using HDMI or optical audio out. There were also some complaints about flaky WiFi, and some users ran into problems when trying to migrate their data to a new Mac running Lion—both of which have been resolved, according to Apple. Most annoyingly, some Lion users said that their main admin accounts were missing after upgrading to Lion, which has apparently been fixed.

For the 2011 MacBook Air, Apple has applied all the same updates, plus a fix for a problem that caused the Air to boot up when the MagSafe connector was attached and another related to flickering displays. The Mac mini also got a fix for a problem that caused the SD card slot to operate at reduced speeds.

It's a bit early to tell whether Apple sneaked other bug fixes into this update, but some users are still holding out hope that it will help speed up their systems after upgrading. If you have already applied the update, do you see improvements?