yum check--update报错

笑拳怪招成龙

我在fedora16中输入yum check--update后提示：

There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   /usr/lib/libcurl.so.4: symbol __fdelt_chk, version GLIBC_2.15 not defined in file libc.so.6 with link time reference

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
2.7.2 (default, Jul  8 2011, 18:54:16)
[GCC 4.6.1 20110627 (Red Hat 4.6.1-1)]

If you cannot solve this problem yourself, please go to
the yum faq at:
  http://yum.baseurl.org/wiki/Faq
请各位大侠帮忙看看怎么解决？

dooros

你升级过python？

笑拳怪招成龙

没有！

笑拳怪招成龙

装好系统就这样了

笑拳怪招成龙

大侠帮下忙!能不能先删除自带yum，再重新安装？还有有颜色的那一句什么意思？