Comment 23 for bug 267047

Similar problem here:
The cpufreq applet randomly display garbage. Practically, when something is drawn over the area (for example a tooltip label) it remains there.
Panel background is set to solid color with transparency. Turning transparency off do not resolve the issue, but will occasionally clear the applet area, making it disappear as if it is not on the panel (the panel has the correct color, even with transparency applied. No color blocks)
The applet always remain functional: the tooltip shows the correct policy and frquence, and it is posible to set them.

Screenshots attached for more clarity. The applet should be on the left of the volume icon.
I am using intrepid i386, installed from cd over a previous Hardy install, in the case it's relevant.