I am having some problems when waking my MBA up from an extended period of sleep (i.e. overnight). I get a message saying "Your Mac OS X startup disk has no more space available for application memory." In order to continue, I have to force quit any applications that are running. I have a brand new 11 inch MBA with 128 GB hard drive and 4 GB ram, and the only things I have running when this happens is Safari, with 7-8 tabs open, so I am confused as to why this is happening.