I did a clean install (keeping my old home partition) of ubuntu 12.04. Everything working fine, except the process avahi-daemon is consuming a lot (60-90%) CPU.
What is the avahi-daemon? Does it have something to do with Ubuntu One? I found guides on the internet on how to disable it, but I'm not eager to disable it, as it appearantly has use.
Hardware: Dell Studio 1557, intel i5, AMD Radeon HD5470