I just played around with the Acid3 test using Chromium in Ubuntu's daily ppa: 7.0.531.0 (60146) Ubuntu 10.04. I'm interested because it isn't pixel-for-pixel, but it does say 100/100. Is the Acid3 test supposed to fail for Chromium PPA? Or, is it good enough?
To pass the test, a browser must use its default settings, the animation has to be smooth, the score has to end on 100/100, and the final page has to look exactly, pixel for pixel, like this reference rendering.
The height of the reference appears to be slightly taller and all of the elements and text seem to be shifted down from the words Acid3
Open up both of those in a tab, and just do <Ctrl>+<PgDown> and <Ctrl>+<PgUp>