http://www.w3.org/Graphics/SVG/Test/20061213/htmlObjectHarness/full-styling-pres-01-t.html "Check that !important in presentation attribute is an error. A fill attribute is set to red with !important. This is an error. Consequently, the document should go in error and rendering stopped before rendering the rect element. Therefore, only the blue circle should be displayed by the user agent." Running nightly, with safari 3.0.4 windows xp sp2. Hopefully it wasn't reported before since I coudln't find it
This is an intentional failure. We disagree with the W3C regarding error handling. I think you'll find that all browsers fail this test.