I've got zope 2.3.0 running with python 1.5.2 on RedHat 6.2. I'm afraid the threads for python have not been compiled in. Is there an RPM that does it? (My system administrator will not let me install anything without an RPM. How difficult is it to write an RPM?) thanks a lot, -Philippe (Below, I'm including the page source of an error message trying the Guest_Book example of the Zope Book, which btw is an excellent book :-) <!-- Traceback (innermost last): File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 222, in publish_module File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 187, in publish File /usr/share/zope/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 171, in publish File /usr/lib/python1.5/site-packages/ZPublisher/mapply.py, line 160, in mapply (Object: addEntryAction) File /usr/lib/python1.5/site-packages/ZPublisher/Publish.py, line 112, in call_object (Object: addEntryAction) File /usr/share/zope/lib/python/OFS/DTMLMethod.py, line 189, in __call__ (Object: addEntryAction) File /usr/lib/python1.5/site-packages/DocumentTemplate/DT_String.py, line 538, in __call__ (Object: addEntryAction) File /usr/lib/python1.5/site-packages/DocumentTemplate/DT_Util.py, line 334, in eval (Object: addEntry(guest_name, comments)) (Info: guest_name) File <string>, line 0, in ? File /usr/share/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 324, in __call__ (Object: addEntry) File /usr/share/zope/lib/python/Shared/DC/Scripts/Bindings.py, line 353, in _bindAndExec (Object: addEntry) File /usr/share/zope/lib/python/Products/PythonScripts/PythonScript.py, line 330, in _exec (Object: addEntry) (Info: ({'script': <PythonScript instance at 86c6b40>, 'context': <Folder instance at 87b3998>, 'container': <Folder instance at 87b3998>, 'traverse_subpath': []}, ('Anonymous', 'this is a try'), {}, None)) TypeError: (see above)