Is this expected or am I doing something wrong?:

---- mgarriss@frodo [0] 11:19:06 ~ ----
uname -a
Linux frodo 2.4.20-8 #1 Thu Mar 13 17:18:24 EST 2003 i686 athlon i386 
GNU/Linux
---- mgarriss@frodo [0] 11:19:13 ~ ----
ruby -v
ruby 1.8.0 (2003-08-04) [i686-linux]
---- mgarriss@frodo [0] 11:19:19 ~ ----
ruby -e 'Process.setsid'
-e:1:in `setsid': Operation not permitted (Errno::EPERM)
        from -e:1


TIA
Michael