Firefox is notorious for errors in loading. However, when Firefox is the culprit I try a different browser and my load time is minuscule. I can zip back and forth between tabs in the guide and forum very quickly. I'm running a new pc with very little, except Sims3 on it, using Windows 7. Whether that has anything to do with it or not I don't know but even on my old pc using Vista it was darned near instantaneous.