Both these packaged provide the file /usr/bin/yaf-cdda, and as yaf was already installed on my (unstable) system - kdemultimedia needs it, mpeglib will not upgrade. This change occured between mpeglib_4:3.1.0-0 and mpeglib_4:3.1.0-1. The -0 level did not include the yaf code. Would it not be easier for mpeglib to depend on yaf? David