[BusyBox] Strange problem with login

[Michael Sternberg]

Using latest CVS busybox on PPC I can login only as root.
Here is quote from strace:

execve("/bin/sh", ["-sh"], [/* 6 vars */]) = -1 EACCES (Permission denied)
write(2, "login: ", 7)                  = 7
write(2, "cannot run /bin/sh", 18)      = 18
write(2, ": Permission denied\n", 20)   = 20

What permissions exactly I have to set ?

			Thanks, Michael.