I am having problems with all browsers crashing - Safari, Chrome and Firefox. Usually they will initially work but after a few clicks the page hangs. Safari says it can't find the server, Chrome says 109 error message or sending request, Firefox says can't establish a connection. I am using ethernet cable. I have tried repair permissions, removing internet plug ins one by one, adding new DNS server numbers, uninstalling Flashplayer, uninstalling Silverlight, and uninstalling Extensions. Nothing works and it has essentially rendered the internet unusable for more than 2 minutes. I am using a Macbook Pro running 10.6.8, 2.4 GHz Intel Core 2 Duo 4GB 667 MHz DDR2 SDRAM. Has anyone any further suggestions?