User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:20.0) Gecko/20100101 Firefox/20.0 Build ID: 20130329030848 Steps to reproduce: I navigated through an impress.js presentation using the arrow keys. Here's the link: http://innovationbound.com/advancedProblemSolvingSkills.html#/start Actual results: Upon zooming in, the svg became very blurry on the edges. It flickered a bit into focus, but then stayed blurred. The zoom is conducted with CSS3 transforms. Expected results: In Firefox 19 and also in Firefox Nightly 20.0a1 there is not blurring at all.

Given that this started in Firefox 20, this is likely a dupe of bug 862323, not bug 600207.

Awesome, I dug around but couldn't find the right dup. Hope this is helpful : )

Yup! It's useful to hear that a given bug reproduces at multiple sites. Thanks for the bug report!