System has somewhat clean install - netinstall of Wheezy on xfce 4.8, lightdm and Compiz as window manager. Few panel plug-ins.
Yet the CPU idling (~10) and peaks are way worse than they're on my Ubuntu 10.10 installation, which is more bloated (as in many processes running by default).
Running Iceweasel makes CPU usage go to (near) 100% very frequently, almost always on heavy scrolling; lags when opening tabs etc. One 3D application is running noticeably poorer on Wheezy. Both systems have proprietary GPU drivers installed.
Has anyone else experienced same issue?
(Ubuntu has 2.6.35-30-generic and Wheezy 3.1.0-1-486)