Just over the last couple of days I have been having the same problem with one of our Zope development servers. It starts up fine, then after a while (undetermined as of the moment)the ZServer will just hang (error messages etc. below). I have created/am still creating my own ZClass on this server if that has anything to do with it. I haven't installed any external products (yet). Here are the stats on the server: Athlon 1200 512MB Linux Mandrake 7.2 Zope Version : Zope 2.3.2 (binary release, python 1.5.2, linux2-x86) Python Version: 1.5.2 (#10, Dec 6 1999, 12:16:27) [GCC 2.7.2.3] System Platform: linux2 Here is the STUPID_LOG_FILE output that occurred before the crash: 2001-05-11T16:12:59 ERROR(200) ZServer uncaptured python exception, closing channel <select-trigger (pipe) at 81a8178> (exceptions.OSError:[Errno 11] Resource temporarily unavailable [/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/asyncore.py|poll|83] [/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/asyncore.py|handle_read_even t|335] [/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/select_trigger.py|handle_rea d|77] [/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/asyncore.py|recv|287] [/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/asyncore.py|recv|475]) The output in the shell that started zope reads (this is repeated a few times before the final crash): Unhandled exception in thread: Traceback (innermost last): File "/var/zope/Zope-2.3.2-linux2-x86/ZServer/PubCore/ZServerPublisher.py", line 97, in __init__ response._finish() File "/var/zope/Zope-2.3.2-linux2-x86/ZServer/HTTPResponse.py", line 281, in _finish stdout.close() File "/var/zope/Zope-2.3.2-linux2-x86/ZServer/HTTPResponse.py", line 338, in close Wakeup() File "/var/zope/Zope-2.3.2-linux2-x86/ZServer/medusa/select_trigger.py", line 74, in pull_trigger os.write (self.trigger, 'x') OSError: [Errno 32] Broken pipe Anybody come across this before??? Laurie Laurie Nason Dept. of Biochemistry - N420 Baylor College of Medicine Houston. TX77030