The Mac OS version 10.7.1 includes a number of fixes to the brand new operating system including WiFi reliability, video issues in Safari and reported audio issues with HDMI connectivity.
The 10.7.1 update is recommended for all users running OS X Lion and includes general operating system fixes that enhance the stability and compatibility of your Mac, including fixes that:
– Address an issue that may cause the system to become unresponsive when playing a video in Safari
– Resolve an issue that may cause system audio to stop working when using HDMI or optical audio out
– Improve the reliability of Wi-Fi connections
– Resolve an issue that prevents transfer of your data, settings, and compatible applications to a new Mac running OS X Lion