Upgrading to Fedora Rawhide

I've been running into
"--> Processing Conflict: kudzu conflicts kernel < 2.6.13"
when trying to upgrade to Rawhide, now apart from first upgrading to the most recent kernel version of FC4, which is normal you also have to manually erase all older kernels meannig all kernels older than 2.6.14 including the Xen kernels. Which meant I had to remove Xen from this system before upgrading to rawhide.

Now I`m up for cleaning up my harddisk in order to give yum enough space to actually install the stuff (I assume it will need about 1Gb free on my / ) and wait for a couple of hours in order for the packages to be downloaded.
And all of that to upgrade to a more recent version of Evolution in order to see if bugs still exist there so that I can report them :)