Comment 277 for bug 113201

I DON'T use PAC. I use manual proxy configuration.
I have the same problem of blocking UI during opening a new tab/URL.
I don't understand for what reason DNS resolving has to be done in case using PROXY.

However I understand that this DNS resolving is done through the Proxy server!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I have ping google.com and it works fine for any server in the world.
I need just one simple property in the about:config or checkbox in the proxy settings that says:

Do the DNS resolving with direct connection.

By using this simple fix i will have Firefox that resolves names using the local caching DNS server and working as fast as possible.
Please do that before I download the source and make complete mess of the Firefox to make it works that way.

This proposal will not help for the half of the people that have only proxy and local DNS server.
However many companies including big ones like the one I work for, uses proxy for internet and direct communication for VPN connection to all the offices worldwide. And this is not going to change any time soon in this millennium.
I suffer this bug from the time when Firebird 0.4 have been released. I use Firefox 3.5.4 WinXP and it is not fixed YET WHY?