Website servers can't be found issues

jacee is of course correct. in search type cmd and in the windows type ipconfig /dnsflush then ipconfig /renew.

I am having the same issues.

I have tried the following:

- Disable IPv6 in FF
- Disable IPv6 on the network interface
- Switch to "work network"
- flush dns cache and reset interface

Note that these DO work
- Internet Explorer
- FF on Win7 x32

So, I have been relegated to using a Linux box as a proxy server...