Version-Release number of selected component (if applicable):
kernel-smp-devel-2.6.18-1.2200.fc5.i686.rpm

How reproducible:
Always; simply install the affected RPM.

Actual results:

A symbolic link is created as /lib/modules/2.6.18-1.2200.fc5smp/build that,
instead of pointing to ../../../usr/src/kernels/2.6.18-1.2200.fc5-smp-i686,
where the actual source is, points to
../../../usr/src/kernels/2.6.18-1.2200.fc5-smp-i586 (i.e. i686 vs. i586).  Thus,
a dead link exists where the kernel sources should be.

It's a trivial bug to fix if you are looking for it, but it does cause problems
with the default kernel source location finder of nvidia's installer program.