Hi,
During testing, I found the following warnings/errors in my zope log:

-------
2008-10-17T17:56:50 WARNING ZopePublication Competing writes/reads at ???: 
database conflict error (oid 0x06d3, class zc.queue._queue.BucketQueue, 
serial this txn started with 0x0379451cbf5d7bdd 2008-10-17 15:56:44.851212, 
serial currently committed 0x0379451ccd1f50bb 2008-10-17 15:56:48.075545)
------
2008-10-17T17:58:10 ERROR txn.1121233232 Error in tpc_abort() on manager 
<zope.sqlalchemy.datamanager.SessionDataManager object at 0x35a4f50>
Traceback (most recent call last):
  
File 
"/home/dusty/prog/bsp/buildout/eggs/ZODB3-3.8.0-py2.4-linux-x86_64.egg/transaction/_transaction.py",
 
line 462, in _cleanup
    rm.tpc_abort(self)
  
File 
"/home/dusty/prog/bsp/buildout/eggs/zope.sqlalchemy-0.3-py2.4.egg/zope/sqlalchemy/datamanager.py",
 
line 82, in tpc_abort
    raise TypeError("Already committed")
TypeError: Already committed
------
2008-10-17T17:58:10 WARNING ZopePublication Competing writes/reads 
at /BSPSite/act/@@/bspskin-res/bankaustria.gif: database conflict error (oid 
0x06e3, class zope.session.session.SessionData)
------

Why is this happening? I have to admit, that I'm currently 
testing/implementing background tasks with lovely.remotetask - perhaps this 
is the reason? Perhaps it's the combination with zope.sqlalchemy?

Best Regards,
Hermann

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