Try turning off or changing your virus protection. Many have had this problem and found improvements with different virus protection. McAfee and Norton seem to be the big offenders. Many, including myself, use AVG and find that it works well with no performance problems with this discussion board.
I've tried several Virus protections including Mcafee, Norton, Zone Labs, Am now using PC-cillin by Trend Micro, Seems to work pretty well. Customer support on the others wasn't too great. My pages come up without any problem.
I'm running the Full installation of Norton Systemworks and Webroot Spysweeper, as well as Spybot Search and Destroy and Ad-Aware.
Each page takes less than 2 seconds to display.
Cable, 4 yr old 2.8 gig AMD w/ 1 gig memory.
I think something else, or one of your settings may be slowing you down.