Firefox is markedly slow after update Ubuntu to 13.04 b

I used to run Ubuntu 12.10 & Aurora 22 on my computer. Recently I updated my Ubuntu to 13.04 beta and since has passed, every Web site I try to go to (including Google search and so on...) shows "connecting...". "for about 20 seconds before finally showing any content.
My connection speed is 20 Mbps and Chrome works very well. Downgraded to 20.0 Firefox does not solve. Or by using the "Reset Firefox" feature or solved safe mode.

I love Firefox, been a fan of the browser for years and I would definitely hate to switch to Chrome. Help, please?

Try disabling IPv6

Tags: Firefox

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