Hostnames with colons appended, with no ports specified, have started to cause a "Not allowed to use restricted network port" error. Compare:
This is a regression in the nightlies - works in Safari 4.0.5, doesn't work in r56669.
I'd expect the URL port syntax without a specified port to use the default port.
I would suspect http://trac.webkit.org/changeset/56489 :)
Created attachment 52225 [details]
Landed in r56879.