hello everyone..
i want to install a package through yum... but it always gives error. i have set my proxy correctly.. but still problem


yum install compat-libstdc++-33
Loaded plugins: refresh-packagekit
livna | 1.9 kB 00:00
fedora | 2.4 kB 00:00
adobe-linux-i386 | 951 B 00:00
updates-testing-newkey | 3.4 kB 00:00
rawhide | 4.2 kB 00:00
0795e796dc7ec475ebd338612085fd7f410f3d86e797705e6e9eb72f | 8.9 MB 00:36
http://mirror.svk.su/fedora/linux/de...ry.sqlite.bz2: [Errno -3] Error performing checksum
Trying other mirror.
0795e796dc7ec475ebd338612085fd7f410f3d86e797705e6e9eb72f | 8.9 MB 01:14
http://ftp.riken.jp/Linux/fedora/dev...ry.sqlite.bz2: [Errno -3] Error performing checksum
Trying other mirror.
0795e796dc7ec475ebd338612085fd7f410f3d86e797705e6e9eb72f | 8.9 MB 01:09
http://ftp.jaist.ac.jp/pub/Linux/Fed...ry.sqlite.bz2: [Errno -3] Error performing checksum
Trying other mirror.
0795e796dc7ec475ebd338612085fd7f410f3d86e797705e6e9eb72f | 8.9 MB 01:40
http://mirror1.ku.ac.th/fedora/devel...ry.sqlite.bz2: [Errno -3] Error performing checksum
Trying other mirror.

Which fedora is this?
These errors are only in development repos - perhaps your edition is an old one?

You should probably not be pulling packages from updates-testing-newkey and rawhide unless you know exactly what you are doing.

check your repo....thats where the problem is(if you dont know, its is /etc/yum.repos.d/fedora.repo).
check this link
to check what it looks like