I have the same problem as Jake i try to compile kernel couse of NVIDIA drivers which need USER_LDT option enabled.
I'm running freeBSD 5.0. Until this problem everything was OK.
when i execute "uname -a" i get this :
"FreeBSD diabolek 5.0-RELEASE FreeBSD 5.0-RELEASE #2: Wed Feb 12 05:07:52 CET 2003 root@diabolek:/usr/src/sys/i386/compile/JAJO i386"
Please if u can help me i would appriciate it very much.