Spectators can't move, why?

[Youneex]

I don't understand why spectators cannot move around freely...

here are my settings for this:

mp_forcecamera 0
mp_allowspectators 1
mp_fadetoblack 0

[pl4tinum]

Do these help?

sv_specaccelerate 3
sv_specspeed 3
sv_specnoclip 1