Hello, see my post on the forum (http://bbs.archlinux.org/viewtopic.php?pid=238317#p238317) Any chance that this "low-engineering" approach to implementing an xdelta solution could fly for arch, at least in the short term? This solution involves: 1. modified makepkg (see http://bbs.archlinux.org/viewtopic.php?pid=235654#p235654) 2. packagers having pkgver-1 in the makepkg build dir to create the delta 3. end-user implementing XferCommand with a custom xdelta aware script If this works well for some users, a full c-code solution in pacman could be rolled out further down the track. Thoughts? I see that archlinux.org and the mirrors have been experiencing some "bandwidth" issues after the python 2.5 release that perhaps underline the need for something like this in arch. Dale