Can you re-post your problems in the Forum Feedback forum?
That's the right place to report forum problems and also mention that the same happens in all parts of CNET.
Also, can you state how the forums and other parts work in your other browsers?
The new site makeover is doing terrible with my Opera. Slow scrolling on everything, combined with intermittent fails of rendering and total freezing/crashes. This is across all Cnet, not just Download.com. Just reporting it here, and wondering if anyone else noticed this same problem.