Hello, I tested cfs v11 on 2.6.20.10 and here are my results: I started 6 md5sum /dev/urandom and 3 glxgears with 2 glxgears X was still very responsive...but after starting the third one there where noticeable lags when using X... so I reniced it to -10 and its very smooth again. I am now writing this mail with this task in the background... one more thing: opening a new tab in gnome-terminal has a noticeable delay same for typing su I am using compiz with the nvidia 100.14.03 beta drivers on a core 2 duo T7400 x86_64 with a nvidia 7600 Go... after starting an other md5sum /dev/urandom there are some notice able delays when typing.... (resending) p.s: please CC me - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/