The URL http://www.accountcentralonline.com shows that it is downloading content in the status bar, but never renders anything. This URL stopped working in recent nightly builds, but still works in Safari 4.0.3.
Chris, do you happen to know which nightly build this last worked in?
The web inspector shows nothing in the source after
This regressed due to <http://trac.webkit.org/changeset/48687>.
I can't recall the exact nightly when this bug started occurring since I don't go there often.
Brady, another of those regressions from my change.
This is certainly a dupe of http://webkit.org/b/30424
*** This bug has been marked as a duplicate of bug 30424 ***