Hi.. think I may have found a little problem with v3.0.642.0. I have been troubleshooting a network issue which has required me to temporarily disable the firewall now and then..all seems to go well until I reactivate filtering. Browsing works ok for the next minute of so then I have no use of internet, mail or any other app that relies on network access. I just get timeouts and page cannot be displayed errors. I also lose the ability to ping. But...if I disable the firewall again, network access returns but that's hardly ideal. In the end I have to reboot the PC in order to get some normality back. Has anyone else experienced anything like this? Any suggestions please?