Hi, We just had this in data.fs.lock: 831 5 The server had an unclean shutdown. The old PID was five digits long and was overridden by "831\n". We use an old version of ZODB, but I looked at: http://svn.zope.org/ZODB/trunk/src/ZODB/lock_file.py?view=markup and the lockfile is not truncated in the current version, too. I think it is a bug. Thomas