Firefox 3.5.5 on both
Quite a few "forum pages" (like: http://www.epicski.com/forum/list/9) fail to load at all and many threads only load partially, then freeze.
In many cases, the browser starts the load process and stops loading anything more when it reaches an attempt to "transfer data from yui.yahooapis.com"...
In other cases, the browser fails when it indicates it's trying to "Read static.ak.connect.facebook.com"
I have my Firewalls set to block any activity from most Demographics collection sites, but this usually doesn't block page loads - just the demographics traffic and some advertisements.
The Coaching forum now fails to load on either machine. Clearing caches and system reboots have no effect.
These failures have been occurring for a while now, though I'm not sure how long because when it happens I simply stop looking at EpicSki and move on to other interests. I'm about ready to just move on to other interests permanently.