After a software update, OS X doesn\'t bother to set the install volume\'s permissions to what they should be. After a while, this can really bog down the system installation and cause strange problems. Permissions Doctor is a free Yahoo! widget that runs transparently in the background, and, after a software update/installation, repairs the permissions on the OS X boot volume to help keep those nasty problems away. Just leave it open like you would iCha To close Permissions Doctor, simply control-click it…