Comment 1 for bug 134222

Also seen in Ubuntu 8.04 (Hardy):

$ uname -a
Linux nexus 2.6.24-19-generic #1 SMP Wed Jun 4 15:10:52 UTC 2008 x86_64 GNU/Linux
$ find linux-headers-2.6.24-19-generic/ -type f | wc -l
2612
$ find linux-headers-2.6.24-19-generic/ -type f -size 0 | wc -l
2555

$ find linux-headers-2.6.24-19 -type f | wc -l
8264
$ find linux-headers-2.6.24-19 -type f -size 0 | wc -l
0

What's odder still is that files which are listed in the -generic kernel headers don't exist in the other tree. For instance

$ find /usr/src -iname iforce.h
/usr/src/linux-headers-2.6.24-17-generic/include/config/joystick/iforce.h
/usr/src/linux-headers-2.6.24-19-generic/include/config/joystick/iforce.h
$ ls
linux linux-headers-2.6.24-19
linux-headers-2.6.24-17 linux-headers-2.6.24-19-generic
linux-headers-2.6.24-17-generic rpm