I did a couple of quick tests and it looks as though file roller is not actually compressing the tar file, and it doesn't matter which compression method is chosen. Not sure why it has this effect on your files as the command works as expected for other files.
Steps to reproduce: 1) In Nautilus, right click on "backlightx" directory, Compress... 2) Select .tar.bz2 3) Resulting file size is 10.2KB 4) Right click on directory, Compress... 5) Select .tar 6) Resulting file size is 10.2KB 7) Right-click on .tar, Compress... 8) Select .bz2 9) Resulting file is 870KB ** Changed in: file-roller (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to file-roller in Ubuntu. https://bugs.launchpad.net/bugs/1064117 Title: Extremly poor compression for .tar.bz2 Status in “file-roller” package in Ubuntu: Confirmed Bug description: I am running Xubuntu 12.10 beta 64bit i created a archive for a folder the contents are ~1.5kb the archive is over 10kb i compressed the same files on my Ubuntu 10.04 install and the archive is 851 bytes archive was created from the create archive option in the right click menu in the file browser (thunar) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/file-roller/+bug/1064117/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp