For those having trouble with the StarCraft II auto-patcher, the stand alone patch for the v1.2.0 update is available to download for both PC and Mac. The patch includes a number of bug fixes and game enhancements such as race balance changes, editor improvements and additional Battle.net chat channels.A full list of changes can be found on the official website.

Download StarCraft II v1.2 Patch [US] (275 MB)
Download StarCraft II v1.2 Mac Patch [US] (242 MB)
Check out all StarCraft II downloads