Laurence Pit (the creator of openwiki) discovered a strange bug concerning inline SVG and Adobe SVG Viewer. I’ve been looking into it a little bit more, this is basically how it works:
with ASV 3.0 you can inline SVG in XHTML. But, in IE6, if the XHTML has a DOCTYPE (and it must have to be XHTML) the SVG will not work at all. If you simply remove the DOCTYPE it works again. Strange and annoying bug.