Castleville assets not fully loading

I've been playing Zynga's Castleville on facebook lately and have recently lost certain game assets. The game loads fine when I'm taking a break at work. At home, however, it doesn't appear to load all of the game assets (e.g. Beastie and farm). After verifying all of the typical things, latest version of the Adobe Flash Player, clearing my cache, etc. I was still experiencing the same problem. This has been going on for almost a week now and I suspected that it had something to do my internet connection being shaped as the problem began near enough to that happening. Wanting to have a play today, I began thinking about differences between my work Firefox (v9) and my home version. It occurred to me that apart from the number of tabs and their content, the TorButton extension was the only difference. Into the Add-ons dialog I go, remove the extension (as I rarely use it) and restart Firefox. I log back into facebook and hit Castleville; wait for the game to finish loading and presto, everything is now as it should be.