More specifically when does it happen?
as I said, occasionally, but always when I start pd.
What version of PD are you using? from the deb package that comes with sarge
Could it be an external running?
as it occurs when I start pd, there is just the pd console, nothing else
What is running in the panel? (My panels are simple with icons, stickies and cpu monitor.
just drawers, a clock, the desktop switcher
--Matthias