I have a laptop with Fedora 12. On that machine, I have a debian-lenny chroot.
Within the chroot, I can reproduce the same behavior.
Outside of it, I can't (because which is a binary here).
# uname -a Linux boober.fraggle 2.6.31.5-115.fc12.i686.PAE #1 SMP Wed Nov 4 00:27:30 EST 2009 i686 i686 i386 GNU/Linux
So it might be worth to check upstream kernels first.
I have a laptop with Fedora 12. On that machine, I have a debian-lenny chroot.
Within the chroot, I can reproduce the same behavior.
Outside of it, I can't (because which is a binary here).
# uname -a 5-115.fc12. i686.PAE #1 SMP Wed Nov 4 00:27:30 EST 2009 i686 i686 i386 GNU/Linux
Linux boober.fraggle 2.6.31.
So it might be worth to check upstream kernels first.