Hello *, I observed that under Debian woody, Zope 2.5.1 runs under the user id 'www-data'. The python OS command os.getgroups() gives me an empty list when called from an external method, although I had configured the user 'www-data' to be the member of several groups. If, on the other hand, I run python with my user id from the command line as a normal user, the command os.getgroups () gives me all the groups am a member of (that's what I expected). Please enlighten. (Why I need this: I need appropriate group rights for some 'posix.system' calls from an external method for an interim fix kludge...) (Just to avoid confusion beforehand: I am *not* talking about process groups but about the groups the user running zope is in.) -- Holger Blasum