Hi I'm kinda newbie to Linux and I just upgraded from fc3 to fc4 and now I can't use yum. It gives me the following message, I tried to reinstall python 2.4 but it didn't help. I also hae gcc 4.0 installed. Any help apprecited. Cheers Nic Message: [root@localhost ]# yum update There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: /usr/lib/python2.4/site-packages/cElementTree.so: undefined symbol: PyUnicodeUCS4_DecodeUTF8 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: 2.4 (#2, Feb 12 2005, 00:29:46) [GCC 3.4.3 (Mandrakelinux 10.2 3.4.3-3mdk)] If you cannot solve this problem yourself, please send this message to <yum@xxxxxxxxxxxxxxxxxxxx>.