Apple has released Mac OS X 10.8.1, a maintenance update for Mountain Lion. The upgrade — a 24.2MB download — is available via the Software Update component of Mac OS X’s Systems Preferences app.
According to Apple, OS X 10.8.1 includes general operating system fixes that improve the stability and compatibility of your Mac, including fixes that:
° Resolve an issue that may cause Migration Assistant to unexpectedly quit;
° Improve compatibility when connecting to a Microsoft Exchange server in Mail;
° Address an issue playing audio through a Thunderbolt display;
° Resolve an issue that could prevent iMessages from being sent;
° Address an issue that could cause the system to become unresponsive when using Pinyin input;
° Resolve an issue when connecting to SMB servers with long names;
° Address a issue that may prevent Safari from launching when using a Proxy Automatic Configuration (PAC) file;
° Improve 802.1X authentication with Active Directory credentials.