In cases like this it's always worth emptying your cache. Also, if you have installed any extensions in Firefox, try disabling them, just to rule them out as a possible cause.
Thanks, Sander, that did the trick; you can file GreaseMonkey under known causes for time-out
Did you have any greasemonkey scripts running on travellerspoint? And which specific version of greasemonkey were you running? That's a fairly popular extension, so if it's reproduceable, we might want to look into if we can change things on our end, and/or file a bug with the greasemonkey devs.
No; just a couple on other websites, which I can PM you if you're interested. Greasemonkey's latest version; I updated it, but both the previous and the newest install cause slow-downs in TP.