A set of SharePoint 2010 sandbox solutions that modify the SharePoint 2010 Search page layouts to work with standard and custom master pages.
A full explanation of the why/how of this project is at http://nickhadlee.wordpress.com/2010/11/06/an-alternative-method-for-using-custom-master-pages-with-search-in-sharepoint-2010/Updated - 7 Feb 2011
This project has been updated to now work with all of the current SharePoint 2010 Search Centers. This project originally relied on a custom master page in addition to the sandbox solution but has now been refactored to work with the out-of-the-box V4.master page.
Note: When using this solution with a Basic Search Center you still need to change the master page to V4.master. By default the Basic Search Center doesn't have an ability to change the master page via the browser UI without activating additional features.