This is a little more complicated: I have 2 machines running zope here and I have imported the same site into the 2 machines, so, they have exactly the same setup. The products installed are also the same. On this site I have imported, i have an access rule. But, for some strange reason, i can edit the accessrule on one, but on the other, when i try to do it, i get an Unauthorized Error. The machine which gives me the error is the iBook, but, for what i know, the only difference between one and the other is the Python Version (2.1.1 vs 2.1). Here is the setup: 1. Pentium 2 266 - 128 Ram - Slackware 8 Zope Info: Zope version: (Zope 2.4.1 (source release, python 2.1, linux2), python 2.1.1, linux2) Python version: 2.1.1 (#1, Sep 10 2001, 09:55:09) [GCC 2.95.3 20010315 (release)] System Platform: linux2 Process ID: 270 (2051) Running for: 2 hours 42 min 37 sec 2. Apple iBook 300 - 160 Ram - YellowDog 2.0 Zope Info: Zope version: (Zope 2.4.1 (source release, python 2.1, linux2), python 2.1.0, linux2) Python version: 2.1 (#1, May 8 2001, 15:21:41) [GCC 2.95.3 20010111 (prerelease/franzo/20010111)] System Platform: linux2 Process ID: 1655 (1026) Running for: 42 min 39 sec Thanx by now. -- Sidnei da Silva X3ng Consultoria e Desenvolvimento Ltda. sidnei@x3ng.com.br