Travel is certainly an issue in Far Cry 2. You drive across half the map to do a buddy mission and your buddy gives you a mission that's the other side of the map. No quick travel at all and the buses are a disappointment. I thought it I would have at least been able to see the bus or my character get on the bus but nothing, just fade to black and a loading screen.
I found that disabling the Adblock extension fixed the problem for me in Firefox 3.0.3. For some reason even if you whitesite the entire site Adblock still blocks something. I found http://media.giantbomb.com/media/vine/js/mootools.js?r=1533 in the filters but the button still didn't appear after i'd deleted it from the filters.
I still have a non functional button in IE7. I added the site to the trusted sites zone and allowed pop ups for the site but it still doesn't work.