I'm also seeing these same desktop corruption issues after installing the 14328 update, and had to rollback to the 14316 build. I didn't try an older Catalyst driver, but in any case hopefully AMD is aware of it:
http://answers.microsoft.com/en-us/...r/8718d432-67bd-4303-80b3-51377fd1d9a0?page=1
http://answers.microsoft.com/en-us/...r/8718d432-67bd-4303-80b3-51377fd1d9a0?page=1