Hi there in the last days my Zope server seems to hang and the CPU is almost every time at 100 %. I installed DeadlockDebugger and see a lot of these entries: ----------------------------------------------------------------------------- File "/usr/local/Zope-2.10.5/lib/python/OFS/Traversable.py", line 288, in unrestrictedTraverse return obj File "/usr/local/Zope-2.10.5/lib/python/ZODB/Connection.py", line 767, in setstate raise File "/usr/local/Zope-2.10.5/lib/python/ZODB/Connection.py", line 820, in _setstate obj._p_serial = serial File "/usr/local/Zope-2.10.5/lib/python/ZODB/serialize.py", line 605, in setGhostState obj.__setstate__(state) File "/usr/local/Zope-2.10.5/lib/python/ZODB/serialize.py", line 597, in getState return unpickler.load() File "/usr/local/Zope-2.10.5/lib/python/ZODB/serialize.py", line 471, in _persistent_load return self.load_oid(reference) File "/usr/local/Zope-2.10.5/lib/python/ZODB/serialize.py", line 537, in load_oid return self._conn.get(oid) File "/usr/local/Zope-2.10.5/lib/python/ZODB/Connection.py", line 225, in get return obj File "/usr/local/Zope-2.10.5/lib/python/ZODB/FileStorage/FileStorage.py", line 562, in load self._lock_release() File "/usr/local/lib/python2.4/threading.py", line 109, in acquire return rc ----------------------------------------------------------------------------- I am wondering what the last line File "/usr/local/lib/python2.4/threading.py", line 109, in acquire return rc does exactly mean. Are the threads blocked? My configuration: -Zope 2.10.5 running with 8 threads on a 2-CPU machine with 8 GB of RAM -Python 2.4.4 -LDAPUserfolder -Silva CMS 2.0.8 -ZODB size: ~6 Gbyte -Only 6-10 people work in the CMS and no public access (spy bots, crawlers) access the Zope server Regards Nico