Сломался yum

[root@www tmp]# yum update
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
base                                                     | 5.9 kB     00:00 ... 
http://mirror.yandex.ru/centos/6.3/os/repodata/repomd.xml: [Errno -1] Error importing repomd.xml for base: Damaged repomd.xml file
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

[root@www tmp]# yum update
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
base                                                     | 5.9 kB     00:00 ... 
http://mirror.yandex.ru/centos/6.3/os/x86_64/repodata/repomd.xml: [Errno -1] Error importing repomd.xml for base: Damaged repomd.xml file
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

Loaded plugins: fastestmirror, priorities
Determining fastest mirrors
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
 Eg. </html>/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: base

plugins=0

Config time: 0.161
Yum Version: 3.2.29
COMMAND: yum update 
Installroot: /
Setting up Package Sacks
CentALT                                                  | 5.9 kB     00:00 ... 
http://centos.alt.ru/repository/centos/6/x86_64/repodata/repomd.xml: [Errno -1] Error importing repomd.xml for CentALT: Damaged repomd.xml file
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: CentALT. Please verify its path and try again

Config time: 0.005
Yum Version: 3.2.29
COMMAND: yum update 
Installroot: /
Setting up Package Sacks
base                                                     | 5.9 kB     00:00 ... 
http://mirror.yandex.ru/centos/6.3/os/x86_64/repodata/repomd.xml: [Errno -1] Error importing repomd.xml for base: Damaged repomd.xml file
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again

rpm -qa curl libcurl rpm yum python*

rpm-4.8.0-27.el6.x86_64
python-pycurl-7.19.0-8.el6.x86_64
python-inotify-0.9.1-1.el6.noarch
libcurl-7.19.7-26.el6_2.4.x86_64
python-2.6.6-29.el6_2.2.x86_64
yum-3.2.29-30.el6.centos.noarch
curl-7.19.7-26.el6_2.4.x86_64
python-libs-2.6.6-29.el6_2.2.x86_64
python-iniparse-0.3.1-2.1.el6.noarch
python-urlgrabber-3.9.1-8.el6.noarch