Thank you for your quick reply. I am considering installing blender 2.5 (dowloaded from blender.org, of course. There seems no deb repos availlable), which occupies some 95 M of disk space and requires certain extra library files. I would appreciate it if you could give me your complete mkiso command which helps reduce the iso size so that it would fit a CD. I want blender 2.5, rar, unrar,chmsee, ibus-unikey, mobipocketreader 4.9, adobe flash, microsoft corefonts. I have tried removing libreoffice-base, icedove, adriane*, libreoffice-l10n-de, virtualbox*, and other software, which return over 145 MB. Thank you in advance.