Yum update wants to install kernel.i686 0:2.6.20-1.2319.fc5 from updates, and kmod-madwifi.i686 0:0.9.3.1-1.2.6.20_1.2319.fc5 from livna on my laptop. Unfortunately, this fails because kmod-madwifi version 0.9.3.1 requires madwifi-kmod-common version 0.9.3.1 which would theoretically be supplied by a 0.9.3.1 version of the madwifi rpm. Unfortunately, although the livna repository for fc6 and f7 contain the required madwifi version 0.9.3.1, the fc5 repository only contains version 0.9.3. This blocks use of the latest fc5 kernel (2319) if use of the wireless card in the laptop is necessary (which requires an Atheros compatible driver). This makes the madwifi driver from livna necessary until/unless an open source driver for the Atheros cards is produced. (I believe that work is underway, but I don't believe it is in the kernel yet.) I have reported this to the livna bugzilla as bug 1554.