http/tests/media/remove-while-loading.html times out on mac-lion-wk2, so I'm going to skip it for now.
I cannot reproduce this timeout on Mountain Lion WK2 tests. I am going to unskip it for now, and add it back as skipped on Lion only if I see it starting to time out there.
Unskipped in http://trac.webkit.org/changeset/148693