I just tried to run "yum update" this evening and this happened: 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: 2.4.1 (#2, May 3 2005, 17:14:18) [GCC 3.2.2 20030222 (Red Hat Linux 3.2.2-5)] If you cannot solve this problem yourself, please go to the yum faq at: http://wiki.linux.duke.edu/YumFaq Any ideas? Alastair