Comment 79 for bug 38131

i can confirm brendan's report about new.facebook.com. i have the same problem with the old www.facebook.com too.
my setup:
Ubuntu 8.10
intel dualcore
2.6.27-2-generic
firefox 3.01 from synaptic
nvidia-driver 173
shockwave flash 10.0.0 d525
(synaptic backports enabled)
once facebook is loaded one processor core hits 100% and stays there. X uses about 90%. the problem only occurs when facebook is in the active tab.