I have a Power Mac G4 Quicksilver 933Mhz running OS X 10.4.11. Ever since I upgraded from Vs. OS X 10.4, I have had problems with my browsers. When I boot up I get an alert message with a red sign that shows for about two or three quick seconds. I am not able to read what it states. Can someone tell me how to bring up this alert message. I think it might have something to do with how my browser is not functioning properly. I can't load up some pages with my Safari or FireFox browsers; I get a blank screen, but the URL shows up with some additional information. I also have a 2009 Mac Pro that does not have this problem with loading up web site pages. Can anyone help me?