Hi, A while back I had upgraded to 10.8 from 10.7, and many websites don't load on my laptop. On safari and firefox, when I try to open a site up like youtube, all I see is a blank screen. But on chrome it has an error message.I have never had this error with 10.7. Any help would be appreciated PS I don't know much about computer/mac stuff, i.e. how work keychain access, so I would appreciate it if you could give step by step instructions. Thanks.