firestarter on FC3/kernel-2.6.9-1.681

I upgraded to Fedora Core 3 and immediately updated the kernel to
2.6.9-1.681. It seemed to work and I removed 2.6.9-1.667. Now I've
discovered that firestarter doesn't work. I've tried old and new
versions and building from source. I consistently get an error message
telling me that "A proper configuration for Firestarter was not found."
Can anybody explain what is wrong? Can anybody confirm that firestarter
does work with either of these kernels (and fully updated FC3)? I should
be able to find an older kernel somewhere if it's the new kernel that is
the problem.

Bob T.