Updated to beta 2, but the demos all looked so slow and clunky that I'm sure most users would consider the experience unacceptable. I have hardware acceleration enabled, with all the wobbly compiz effects, but the browser doesn't seem to be making use of the hardware.
My understanding is that the beta only supports acceleration under Windows via Direct2D and DirectWrite, which is only supported on > Vista. This is similar to the current IE9 previews. I'm not sure when they expect to add similar functionality to other platforms. The demos I tried under Linux were usable, but admittedly they lagged a bit.
