[mod_python] PSP and Session Probelms

Hi ,

When I try to use "session" object inside a PSP page I get following  
error  ( I am using Mac OS X 10.3.9 , Python 2.3 (Apple), and  
mod_python 3.1.4).

Is it something specific to Mac OS X ?

By the way in my psp page I am doing a very simple thing i.e.

if not session.is_new():
	#  do something
else:
	# do something else


Mod_python error: "PythonHandler mod_python.psp"

Traceback (most recent call last):

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/apache.py", line 299, in  
HandlerDispatch
     result = object(req)

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/psp.py", line 297, in handler
     p.run()

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/psp.py", line 191, in run
     session = Session.Session(req)

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/Session.py", line 389, in Session
     timeout=timeout, lock=lock)

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/Session.py", line 294, in __init__
     timeout=timeout, lock=lock)

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/Session.py", line 131, in __init__
     self.lock()                 # lock new sid

   File  
"/System/Library/Frameworks/Python.framework/Versions/2.3/lib/ 
python2.3/site-packages/mod_python/Session.py", line 215, in lock
     _apache._global_lock(self._req.server, self._sid)

ValueError: Failed to acquire global mutex lock