LinuxQuestions.org - how to avoid some mirror sites for fedora ?

I am getting more and more impatient with either FC9 or its mirror sites.

First whenever I do a yum stuff, I was brought to mirror sites
that are slow (I always get time out on the "stupid" server of
mirror.nus.edu.sg/fedora, some how I just have the feeling the server is too slow to act as a effective mirror). Is there a way to avoid
certain well-known slow mirror sites ??

Another thing, as shown below, I have do "yum install totem"
three times before I get it installed! Even then it may not still work when i try to use it. I shall see.

It is not just this, I have the same experience with other packages.
Some even show conflicts that I haven't got a clues.

[root@fc9 ~]# yum install totem
Loaded plugins: refresh-packagekit
rpmfusion-nonfree-updates | 2.7 kB 00:00
7a13d6e3407fdc4234c797f6d249ac66a7625923-primary.sqlite. | 84 kB 00:01
fedora | 2.4 kB 00:00
rpmfusion-free-updates | 2.7 kB 00:00
2359cb7b4ccd3d496cebe151d5f0c8e2a7873212-primary.sqlite. | 308 kB 00:02
removing mirrorlist with no valid mirrors: //var/cache/yum/rpmfusion-free/mirrorlist.txt
Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmfusion-free. Please verify its path and try again
[root@fc9 ~]# yum install totem
Loaded plugins: refresh-packagekit
rpmfusion-free | 951 B 00:00
primary.xml.gz | 201 B 00:00
adobe-linux-i386 | 951 B 00:00
updates-newkey | 2.3 kB 00:00
primary.sqlite.bz2 | 192 kB 00:43
http://mirror.nus.edu.sg/fedora/upda...ry.sqlite.bz2: [Errno 4] Socket Error: timed out
Trying other mirror.
primary.sqlite.bz2 | 4.0 MB 05:17
http://mirror.yandex.ru/fedora/linux...ry.sqlite.bz2: [Errno -1] Metadata file does not match checksum
Trying other mirror.
primary.sqlite.bz2 | 4.1 MB 00:27
removing mirrorlist with no valid mirrors: //var/cache/yum/rpmfusion-nonfree/mirrorlist.txt
Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmfusion-nonfree. Please verify its path and try again
[root@fc9 ~]# yum install totem
Loaded plugins: refresh-packagekit
rpmfusion-nonfree | 951 B 00:00
primary.xml.gz | 201 B 00:00
updates | 2.6 kB 00:00
Setting up Install Process
Parsing package install arguments
Resolving Dependencies
--> Running transaction check
--> Processing Dependency: totem = 2.23.2-2.fc9 for package: totem-nautilus
---> Package totem.x86_64 0:2.23.2-8.fc9 set to be updated
--> Running transaction check
---> Package totem-nautilus.x86_64 0:2.23.2-8.fc9 set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================
Package Arch Version Repository Size
=============================================================================
Updating:
totem x86_64 2.23.2-8.fc9 updates-newkey 2.4 M
totem-nautilus x86_64 2.23.2-8.fc9 updates-newkey 36 k

Transaction Summary
=============================================================================
Install 0 Package(s)
Update 2 Package(s)
Remove 0 Package(s)

Total download size: 2.4 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): totem-nautilus-2.23.2-8.fc9.x86_64.rpm | 36 kB 00:02
(2/2): totem-2.23.2-8. 79% | 79% |======= | 31 kB/s | 1.9 MB 00:16 ETA

(2/2): totem-2.23.2-8.fc9.x86_64.rpm | 2.4 MB 01:22
warning: rpmts_HdrFromFdno: Header V3 DSA signature: NOKEY, key ID 6df2196f
Importing GPG key 0x6DF2196F "Fedora (8 and 9) <fedora@fedoraproject.org>" from /etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-8-and-9-x86_64
Is this ok [y/N]: y
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : totem ######################### [1/4]
Updating : totem-nautilus ######################### [2/4]
Cleanup : totem ######################### [3/4]
Cleanup : totem-nautilus ######################### [4/4]

Updated: totem.x86_64 0:2.23.2-8.fc9 totem-nautilus.x86_64 0:2.23.2-8.fc9
Complete!