XFree86 4.02 eating CPU

Hi! Just upgraded to XFree86 4.02 (with a little trouble) on my woody-box (Linux 2.4.1). After using it a while I noticed that while playing a mp3 and scrolling the Netscape-window the sound from the mp3 got distorted. I thought this was very strange cause I've never experienced anything like thi

cannot unlink

When I tried purging the package bc the following thing happened; dpkg: error processing bc (--purge): unable to delete control info file `/var/lib/dpkg/info/bc.postinst': Operation not permitted And then I tried to remove the file manually being root; rm: cannot unlink `bc.postinst': Operation