The 10.6.1 Update is recommended for all users running Mac OS X Snow Leopard and includes general operating system fixes that enhance the stability, compatibility, and security of your Mac, including fixes for: – compatibility with some Sierra Wireless 3G modems – an issue that might cause DVD playback to stop unexpectedly – some printer compatibility drivers not appearing properly in the add printer browser – an issue that might make it difficult to remove an item from the Dock – instances where automatic account setup in Mail might not work – an issue where pressing cmd-opt-t in Mail brings up the special characters menu instead of moving a message – Motion 4 becoming unresponsive For detailed information on this update, please visit this website: http://support.apple.com/kb/HT3810. For information on the security content of this update, please visit: http://support.apple.com/kb/HT1222.