[Zope-CMF] CookieCrumbler redirects to login page

[sureshvv]

My site is redirecting logged in users to the login page intermittently without 
any error message (on the screen, error_log or event.log even with 
VerboseSecurity installed) when they access certain potions of the site.

What changes do I need to make to get the permission that was denied? Can we fix 
CookieCrumbler to put a portal_status_message and put the full message in the 
error_log?

Suresh