Apple has released a “supplemental update” for Mac OS X 10.6 (“Snow Leopard”). Mac OS X 10.6.8 Supplemental Update (http://support.apple.com/kb/DL1429) is recommended for all users running Mac OS X Snow Leopard 10.6.8 and resolve issues with:
° Transferring personal data, settings, and compatible applications from a Mac running Mac OS X Snow Leopard to a new Mac running Mac OS X Lion;
° Certain network printers that pause print jobs immediately and fail to complete;
° System audio that stops working when using HDMI or optical audio out.
Mac OS X 10.6.8 Server Supplemental Update (http://support.apple.com/kb/DL1430) is recommended for all servers currently running Snow Leopard Server. This update includes specific fixes for server-side performance issues.