im using fedora core 8... when i try to install something using yum its starting to download primary,sqlite.bz2. Its breaks before completing and starts downloading again and again from the begining. few days back it downloaded completely. but after that im not able to install anything using yum as it says missing dependancies. its not downloading dependancies. So i cleaned yum cashe but after that when i used yum it again started downloading primary.sqlite.bz2. im not able to use yum now..

i hav added following repos

yum repolist
repo id repo name status
InstallMedia Fedora 8 enabled
fedora Fedora 8 - i386 enabled
livna Livna for Fedora Core 8 - i386 - Base enabled
updates Fedora 8 - i386 - Updates enabled

Your repolist looks similar to my own, with the exception of the InstallMedia entry. Does the media need to be mounted for yum to work? You might try removing that repo entry - you shouldn't need it ever if you have a network connection.
How about your network connection - are you behind a proxy? If so you would need to set the http_proxy environment variable to point at your proxy server.

I Am Using A Proxy Connection.i made all the Proxy Settings. its downloading primary.sqlite.bz2. its size is 4.9 MB
I Removed Install Media Repo And Still Same Problem

I have no idea what that second sentence means. Could you please rephrase it?
If you are using a proxy, yum may not be able to connect. You will need to do something like the following, before running yum:

when i try to install something, it show various dependencies but yum is not downloading dependencies. It just says missing dependencies.i downloaded primary.sqlite.bz2 separately. It is not downloading anything

when i try to install vlc using yum



[root@KK Documents]# yum -y install vlc
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
---> Package vlc.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libxosd.so.2 for package: vlc
--> Processing Dependency: libtar.so.1 for package: vlc
--> Processing Dependency: libwx_gtk2u_adv-2.8.so.0 for package: vlc
--> Processing Dependency: libwx_gtk2u_core-2.8.so.0 for package: vlc
--> Processing Dependency: libpulse.so.0(PULSE_0) for package: vlc
--> Processing Dependency: libwx_gtk2u_adv-2.8.so.0(WXU_2.8) for package: vlc
--> Processing Dependency: libwx_gtk2u_core-2.8.so.0(WXU_2.8) for package: vlc
--> Processing Dependency: libcucul.so.0 for package: vlc
--> Processing Dependency: libcaca.so.0 for package: vlc
--> Processing Dependency: libwx_baseu-2.8.so.0 for package: vlc
--> Processing Dependency: dejavu-fonts for package: vlc
--> Processing Dependency: vlc-core = 0.8.6i-1.lvn8 for package: vlc
--> Processing Dependency: libaa.so.1 for package: vlc
--> Processing Dependency: libvlc.so.0 for package: vlc
--> Processing Dependency: libwx_baseu-2.8.so.0(WXU_2.8) for package: vlc
--> Running transaction check
---> Package dejavu-fonts.noarch 0:2.20-1.fc8 set to be updated
---> Package xosd.i386 0:2.2.14-10.fc8 set to be updated
---> Package vlc.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libpulse.so.0(PULSE_0) for package: vlc
---> Package libcaca.i386 0:0.99-0.3.beta11.fc8 set to be updated
---> Package aalib.i386 0:1.4.0-0.13.rc5.fc8 set to be updated
---> Package vlc-core.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libportaudio.so.2 for package: vlc-core
--> Processing Dependency: liblirc_client.so.0 for package: vlc-core
--> Processing Dependency: libdvdnav.so.4 for package: vlc-core
--> Processing Dependency: libfaad.so.0 for package: vlc-core
--> Processing Dependency: liba52.so.0 for package: vlc-core
--> Processing Dependency: libdirac_decoder.so.0 for package: vlc-core
--> Processing Dependency: libpostproc.so.51 for package: vlc-core
--> Processing Dependency: libavformat.so.51 for package: vlc-core
--> Processing Dependency: libvgagl.so.1 for package: vlc-core
--> Processing Dependency: libdvdread.so.3 for package: vlc-core
--> Processing Dependency: libmad.so.0 for package: vlc-core
--> Processing Dependency: libdirectfb-1.0.so.0 for package: vlc-core
--> Processing Dependency: libtwolame.so.0 for package: vlc-core
--> Processing Dependency: libdirac_encoder.so.0 for package: vlc-core
--> Processing Dependency: libmpeg2.so.0 for package: vlc-core
--> Processing Dependency: libvga.so.1 for package: vlc-core
--> Processing Dependency: libupnp.so.3 for package: vlc-core
--> Processing Dependency: libmatroska.so.0 for package: vlc-core
--> Processing Dependency: libebml.so.0 for package: vlc-core
--> Processing Dependency: libid3tag.so.0 for package: vlc-core
--> Processing Dependency: libopendaap.so.0 for package: vlc-core
--> Processing Dependency: libdvbpsi.so.5 for package: vlc-core
--> Processing Dependency: libavutil.so.49 for package: vlc-core
--> Processing Dependency: libvcdinfo.so.0 for package: vlc-core
--> Processing Dependency: libavcodec.so.51 for package: vlc-core
--> Processing Dependency: libcddb.so.2 for package: vlc-core
--> Processing Dependency: libSDL_image-1.2.so.0 for package: vlc-core
--> Processing Dependency: libdca.so.0 for package: vlc-core
--> Processing Dependency: libx264.so.56 for package: vlc-core
--> Processing Dependency: libvcdinfo.so.0(VCDINFO_0) for package: vlc-core
---> Package libtar.i386 0:1.2.11-9.fc8 set to be updated
---> Package wxGTK.i386 0:2.8.4-6.fc8 set to be updated
--> Running transaction check
---> Package vlc-core.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libdvdnav.so.4 for package: vlc-core
--> Processing Dependency: libopendaap.so.0 for package: vlc-core
---> Package portaudio.i386 0:19-3.fc8 set to be updated
---> Package dirac-libs.i386 0:0.8.0-2.fc8 set to be updated
---> Package faad2.i386 1:2.0-21.20050131.lvn8 set to be updated
---> Package libcddb.i386 0:1.3.0-2.fc8 set to be updated
---> Package libmad.i386 0:0.15.1b-6.lvn8 set to be updated
---> Package twolame-libs.i386 0:0.3.12-1.lvn8 set to be updated
---> Package mpeg2dec.i386 0:0.4.1-3.lvn8 set to be updated
---> Package lirc.i386 0:0.8.2-2.fc8 set to be updated
---> Package libid3tag.i386 0:0.15.1b-4.fc8 set to be updated
---> Package directfb.i386 0:1.0.0-3.fc8 set to be updated
---> Package libmatroska.i386 0:0.8.1-2.fc8 set to be updated
---> Package libdvbpsi.i386 0:0.1.6-1.lvn8 set to be updated
---> Package a52dec.i386 0:0.7.4-11.lvn8 set to be updated
---> Package vlc.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libpulse.so.0(PULSE_0) for package: vlc
---> Package libdvdread.i386 0:0.9.7-3.fc8 set to be updated
---> Package ffmpeg-libs.i386 0:0.4.9-0.42.20071121.lvn8 set to be updated
--> Processing Dependency: libfaac.so.0 for package: ffmpeg-libs
--> Processing Dependency: libxvidcore.so.4 for package: ffmpeg-libs
--> Processing Dependency: libmp3lame.so.0 for package: ffmpeg-libs
---> Package libebml.i386 0:0.7.7-3.fc8 set to be updated
---> Package SDL_image.i386 0:1.2.6-3.fc8 set to be updated
---> Package vcdimager.i386 0:0.7.23-3.lvn6 set to be updated
---> Package x264.i386 0:0-0.10.20070819.lvn8 set to be updated
---> Package libdca.i386 0:0.0.5-2.lvn8 set to be updated
---> Package libupnp.i386 0:1.6.0-3.fc8 set to be updated
---> Package svgalib.i386 0:1.9.25-3.fc8 set to be updated
--> Running transaction check
---> Package vlc-core.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libdvdnav.so.4 for package: vlc-core
--> Processing Dependency: libopendaap.so.0 for package: vlc-core
---> Package xvidcore.i386 0:1.1.3-1.lvn8 set to be updated
---> Package vlc.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libpulse.so.0(PULSE_0) for package: vlc
---> Package faac.i386 0:1.25-4.lvn8 set to be updated
--> Processing Dependency: libmp4v2.so.0 for package: faac
---> Package lame-libs.i386 0:3.97-6.lvn8 set to be updated
--> Running transaction check
---> Package vlc-core.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libdvdnav.so.4 for package: vlc-core
--> Processing Dependency: libopendaap.so.0 for package: vlc-core
---> Package vlc.i386 0:0.8.6i-1.lvn8 set to be updated
--> Processing Dependency: libpulse.so.0(PULSE_0) for package: vlc
---> Package libmp4v2.i386 0:1.5.0.1-5.fc8 set to be updated
--> Finished Dependency Resolution
Error: Missing Dependency: libpulse.so.0(PULSE_0) is needed by package vlc
Error: Missing Dependency: libopendaap.so.0 is needed by package vlc-core
Error: Missing Dependency: libdvdnav.so.4 is needed by package vlc-core
[root@KK Documents]#

have you installed the New signing key
http://forums.fedoraforum.org/showthread.php?t=199573