This is actually a very poor solution as it's very common for people using the development tree to _not_ reboot every day. I generally ended up with about 10 kernels of which I had maybe booted into 3 before having to remove some to make space for more. This way, we're not spending space on things that you haven't booted into
This should probably be different for the release compared to FC-devel?
regards,
Florian La Roche