I can reproduce this message by adding many https repositories to sources.list. For example, with these sources (which are public, so you can try this yourself):
deb https://debathena.mit.edu/apt precise debathena deb-src https://debathena.mit.edu/apt precise debathena deb https://debathena.mit.edu/apt quantal debathena deb-src https://debathena.mit.edu/apt quantal debathena deb https://debathena.mit.edu/apt raring debathena deb-src https://debathena.mit.edu/apt raring debathena deb https://debathena.mit.edu/apt saucy debathena deb-src https://debathena.mit.edu/apt saucy debathena deb https://debathena.mit.edu/apt trusty debathena deb-src https://debathena.mit.edu/apt trusty debathena deb https://debathena.mit.edu/apt utopic debathena deb-src https://debathena.mit.edu/apt utopic debathena deb https://debathena.mit.edu/apt vivid debathena deb-src https://debathena.mit.edu/apt vivid debathena I get: $ sudo rm /var/lib/apt/lists/debathena* $ sudo apt-get update … W: Size of file /var/lib/apt/lists/partial/debathena.mit.edu_apt_dists_quantal_debathena_source_Sources.bz2 is not what the server reported 31194 16209 W: Size of file /var/lib/apt/lists/partial/debathena.mit.edu_apt_dists_saucy_debathena_source_Sources.bz2 is not what the server reported 31029 24393 W: Size of file /var/lib/apt/lists/partial/debathena.mit.edu_apt_dists_trusty_debathena_source_Sources.bz2 is not what the server reported 26334 16209 W: Size of file /var/lib/apt/lists/partial/debathena.mit.edu_apt_dists_utopic_debathena_source_Sources.bz2 is not what the server reported 26237 16209 W: Size of file /var/lib/apt/lists/partial/debathena.mit.edu_apt_dists_vivid_debathena_source_Sources.bz2 is not what the server reported 14 251 This does not happen with the same repositories over plain http. ** Also affects: apt (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/807303 Title: "bizarre error - file size is not what the server reported" with private ppa To manage notifications about this bug go to: https://bugs.launchpad.net/launchpad/+bug/807303/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
