[Zope] cgi_module_publish cookie prsing errors?

All of my "real" sites are still running under Principia. Recently a number users of these sites have had their machines upgraded. Those now using the latest versions of IE and Netscape are unable to access the sites now unless they turn off cookies, or they get an error in cgi_module_publish to do with parsing cookies. (I'm still trying to get someone to send me the actual error text). Anyone out there using Principia still? Have you seen this? Anyone using Zope seen this?