Originally Posted by oyvind
Happens even with latest 2.6.38-rc4-based Lucid backport kernel.
And 2.6.38-rc5 + nvidia-270.26 [Ubuntu Lucid x86-64]. I tend to notice that system has entered this unfortune state when fullscreen Flash video playback is completely useless (*very* slow). Disabling hyper-threading CPUs at suspend/resume workaround still applies and makes the problem go away completely. Would be nice to get rid of that annoying hack ..