Interesting. I double checked a few things on my system, video acceleration appears enabled in my browsers, I also ran:

~$ glxinfo
name of display: :1
display: :1 screen: 0
direct rendering: Yes
server glx vendor string: NVIDIA Corporation
server glx version string: 1.4

and "direct rendering" is a "Yes"... I'm going to rebuild to 0.234 and see if the problem persist. Thank you RB.