Fedora :: Yum Complaining About Lack Of Space On /boot?

I've been trying to run a simple `yum update` for the last couple weeks, but it barfs before it finishes every time. For every single package it will say something similar to "('installing package libdrm-2.4.17-1.fc12.i686 needs 208KB on the /boot filesystem', (9, '/boot', 212992L))"

Here's an example of the output:

Code:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded

[Code]...

This is a machine that I recently put through several upgrades: Fedora 9-> Fedora 10 -> Fedora 12. The computer has been working well for the most part, with some minor bugs here and there. Yum updates were working just fine until this popped up.