We have now tested with Mint and it worked fine for us.
From your logs it looks like there is no connection to the internet. or it is blocked by a firewall, but this should not be the case, as 80 port is usually not blocked, unless you are using firewall software that requires a service to be excluded when it asks for internet access ?
Do you use a proxy to access the internet perhaps ?
Lastly, the only other thing it could be related to is the windows manager. What window manager do you use, GNOME or KDE?