But it does work on Firefox 3 (Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-GB; rv:1.9) Gecko/2008061004 Firefox/3.0) I cleared cookies and cache on webkit and still no loading. Might be https thing.
I tested the reported page in the latest WebKit r39474 and the page properly loaded in WebKit but I have to accept mismatched certificate. Ian, is it still replicable to you?