I have an old PowerBook G4 that was working just fine until recently. As I tried to access some websites it prompted it me to update my web browser. I attempted to go to Google+, Firefox and Safari. I was unable to do either. Are there firewalls, Java, etc which need to be turned on or off to enable these updates or is it a hopeless attempt with this older version of Apple PowerBook G4 (iBook G4 actually). Please advise anyone who can. Thanks.