Why ulimit fails for stack size in Sol 10 update 11 with project settings?

Question

Hi,
The following command fails on Solaris 10 update 11 platform. It works fine with update 10. Something has changed in update 11. Any ideas?
ulimit -Ss 1 (or any number for that matter)
/bin/ksh: ulimit: exceeds allowable limit
We have the following setting in project as well.
process.max-stack-size=(basic,137988707188736,deny)
process.max-stack-size=(priv,137988707188736,deny)
Thanks for your help in advance.
Samy

Answer 1

Here are the values from the project command if you anyone is wondering
update 10
======
cat /etc/release
Oracle Solaris 10 8/11 s10x_u10wos_17b X86
Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved.
Assembled 23 August 2011
prctl -n process.max-stack-size $$
process: 10189: /bin/ksh -i
NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT
process.max-stack-size
privileged 125TB max deny -
system 125TB max deny -
update 11
======
cat /etc/release
Oracle Solaris 10 1/13 s10x_u11wos_24a X86
Copyright (c) 1983, 2013, Oracle and/or its affiliates. All rights reserved.
Assembled 17 January 2013
prctl -n process.max-stack-size $$
process: 24776: /bin/ksh -i
NAME PRIVILEGE VALUE FLAG ACTION RECIPIENT
process.max-stack-size
basic 125TB - deny 24776
privileged 125TB - deny -
system 125TB max deny -