Running vista home premium, my problem was no page loading in all my browsers. I primarily use firefox and about 90 minutes after turning on or rebooting the pc, any page I try to reach or any link I click results in either loading... for a long time or an error message problem loading the page. I also have ie and recently chrome, both when I start the programs cannot even load their home pages, and give a cannot reach or cannot find the address error. While the browsers cannot connect, my network reports as connected to local and internet, I can see the other machines in the network and sharing center, I can ping my router, yahoo.com, google.com, but browse to none of them. My network settings and connections settings are fine, I did once try to uninstall my network card and let it reinstall on the reboot, but 90 minutes later I was back to dead browsers. This problem begins after installing vista service pack 1, I have let it install through windows updates, and have tried by downloading the stand-alone package, I end up either uninstalling the service pack or reversing it by system restore. Because the service pack is supposed to have all these fixes and patches and security improvements, I thought I should have it, but on my pc it should be called sabotage pack. I have asked other computer people and the repair staff at various computer stores, but no one else seems to have encountered this problem. If anyone knows anything, I would like to have the sp installed, as long as it does not require me to reboot 6x a day.