hi I installed Yosemite Public Beta in my MBA mid 2012 and after i installed it both of my browsers (Chrome and Safari) can't load any webpages. But other apps that use connection such as itunes, app store, echofon (twitter) works. as this laptop is my main laptop so i really need the browser to work. i installed but i did not back up my files to time machine. please guide me how to go back to mavericks without losing my files or if you guys know a way to make the browser works again thank you!