Duplicate kernel-headers after upgrading to 2.6.35

[Ryad Ben-El-Kezadri]

Hello everybody,

I installed fc13 (Goddard 2.6.33 kernel).
But I needed kernel 2.6.35
so I downloaded kernel-2.6.35.6-43.fc14.src on koji.fedoraproject.org
followed the instructions on http://fedoraproject.org/wiki/Docs/CustomKerneland
managed to make it works.

However now when I run yum, I get the following warning
"kernel-headers-2.6.35.6-43.fc13.i686 is a duplicate with
kernel-headers-2.6.33.3-85.fc13.i686"

I guess this is because the installation process (
http://fedoraproject.org/wiki/Docs/CustomKernel)<http://fedoraproject.org/wiki/Docs/CustomKernel>
asked to download kernel-headers-2.6.35.6-43.fc13.i686.

I will have to compile applications in userland that needs the new headers.
Can I safely remove the old headers?

Thanks
Ryad