I have noticed this on my T61 with intel graphics. Resting CPU usage is around 20-25%, with Xorg taking around 15% and the rest by regular clients which interact with it -- gnome-panel, awn, and conky use about 3-5% constant CPU each. This is more than normal for all of these programs. Logging out and in again reduces all of these to more normal levels (around 0%).
I have noticed this on my T61 with intel graphics. Resting CPU usage is around 20-25%, with Xorg taking around 15% and the rest by regular clients which interact with it -- gnome-panel, awn, and conky use about 3-5% constant CPU each. This is more than normal for all of these programs. Logging out and in again reduces all of these to more normal levels (around 0%).