I believe my mirror gave me a way to reproduce easily the issue Nagy described there : http://bugs.archlinux.org/task/8350#comment20223 However, it doesn't look at all like the output in the original bug report, where the progress bar is at 64%. So I wasn't sure where to report this information, so I'm reporting it here for now before investigating further. Here is the --debug output: Targets: hunspell-1.2.1-2 openoffice-fr-2.3.1-1 Total Download Size: 15.08 MB [00:27:01] debug: using cachedir: /var/cache/pacman/pkg/ :: Retrieving packages from extra... error: Internal pacman error: Segmentation fault. Please submit a full bug report with --debug if appropriate. [00:27:01] debug: using 'hunspell-1.2.1-2-i686.pkg.tar.gz' for download progress [00:27:01] debug: connected to mir1.archlinuxfr.org successfully [00:27:02] debug: using 'openoffice-fr-2.3.1-1-i686.pkg.tar.gz' for download progress [00:27:02] error: failed retrieving file 'openoffice-fr-2.3.1-1-i686.pkg.tar.gz' from mir1.archlinuxfr.org : Not Found [00:27:02] debug: using 'hunspell-1.2.1-2-i686.pkg.tar.gz' for download progress [00:27:02] error: segmentation fault So pacman first downloads hunspell-1.2.1-2-i686.pkg.tar.gz and succeeds, then it tries to download openoffice-fr-2.3.1-1-i686.pkg.tar.gz and fails. So after that, it tries using the second server in the list. It starts with hunspell-1.2.1-2-i686.pkg.tar.gz again, and then bam, segfault. While I'm finishing this mail, the bug is already gone, since that package is now available on my first mirror. But when it wasn't available, the issue was 100% reproducible, I made it happen 10 times in a row.