btw:
dont know if you people are aware of this, but:
as we know, font rendering with direct2D enabled is bit corrupted, as well as on IE9. its MS bug and solution will be either with some ms update, or in firefox 5, not any sooner.
but if you want to use hw acceleration, with original font rendering, you can do this:
in about:config, search for gfx.direct2d.disabled and set this to TRUE, while leaving hw acceleration option enabled. this will unfortunately not use direct2D acceleration, but still there's direct3D 9 acceleration. its not so fast as direct2D, but its far better than nothing - you can notice very fast scrolling on every page for example, also IE's test drive tests are faster than with acceleration disabled, but slower than with D2D acceleration and still keeps your font rendering correct. just a hint :-)