thanks , I am try using --fix-missing option,if it still failed I will wait. <div class="gmail_quote">2010/4/1 NoOp <<a href="mailto:glgxg@sbcglobal.net">glgxg@sbcglobal.net</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"> <div><div></div><div class="h5">On 03/31/2010 06:27 PM, if-ifone wrote: > Update Manager cann't download some package as list below > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxrandr-dev_1.3.0-3_amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxrandr-dev_1.3.0-3_amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxrandr2_1.3.0-3_amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxrandr2_1.3.0-3_amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxi-dev_1.3.0-3_amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxi-dev_1.3.0-3_amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxi6_1.3.0-3_amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/libx/libxrandr/libxi6_1.3.0-3_amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/x/x11-utils/x11-util_7.5+3amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/x/x11-utils/x11-util_7.5+3amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/liba/libarchive/libarchive1_2.8.0-2_amd64.deb404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/liba/libarchive/libarchive1_2.8.0-2_amd64.deb404</a> > Not Found > failed to fetch > <a href="http://cn.archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-video-neomagic/xserver-xorg-video-neomagic_1.2.4-2_amd64.db404" target="_blank">http://cn.archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-video-neomagic/xserver-xorg-video-neomagic_1.2.4-2_amd64.db404</a> > Not Found > </div></div>Whenever you get msgs like this the most likely problem is that the mirror server is in the process of updating, or hasn't sync'ed to the main servers yet. Recommend that you wait for awhile and try again. Or, change your repository source to the 'Main server': System|Adminstration|Software Sources|Ubuntu Software| - Download from: Main server. -- ubuntu-users mailing list <a href="mailto:ubuntu-users@lists.ubuntu.com">ubuntu-users@lists.ubuntu.com</a> Modify settings or unsubscribe at: <a href="https://lists.ubuntu.com/mailman/listinfo/ubuntu-users" target="_blank">https://lists.ubuntu.com/mailman/listinfo/ubuntu-users</a> </blockquote></div> -- <a href="http://021sj.com">http://021sj.com</a>