Vista - Problem with IE8 beta 2

I keep getting this page (usually when googling) but on other pages as well. Theres nothing wrong with my connection.

I have, in the past, had similar problems with webpages not being able to be displayed. This is usually down to 1 of 2 problems. Firstly, your ISPs DNS server is down, in which case you will just have to be patient and wait until it comes back up. The other possibility is that you may need to go into your firewall's configuration and manually grant the executable, 'iexplore.exe', access to the Internet. Of course, with IE8, you need to be aware that it is a Beta product and that there may still be bugs in the code that can cause problems for some people with certain hardware configurations. If this is the case, then by providing feedback you will bring it to the attention of the development team which will assist them in the further development of the program.
Incidentally, I am using IE7 but will switch to IE8 when the final version is released.

https://connect.microsoft.com/IE

Thanks for the input. I think its most likely to be the mere fact that its beta. But Ill add the exe to the firewall just in case.