error doing a check --verify on files bigger than 1Gb on win32

[sickness]

on a grid with 10 storage nodes, all on win32, and a gateway/client on win32, with all the nodes up and all the shares ok, I can download all the files ok, and check all of them ok. only thing that doesn't work is check --verify of files bigger than 1Gb

here's the error log of the gateway, and after it of a storage node:

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2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] [Failure instance: Traceback: <type 'exceptions.IOError'>: [Errno 22] invalid mode ('wb') or filename: u'C:\\tahoeclient\\logs\\incidents\\incident-2011-05-05--18:33:34Z-w2qn32q.flog'
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\internet\defer.py:106:maybeDeferred
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\src\allmydata\web\common.py:302:renderHTTP
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\src\allmydata\web\root.py:124:render_POST
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\foolscap-0.6.1-py2.6.egg\foolscap\logging\log.py:210:msg
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] --- <exception caught here> ---
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\foolscap-0.6.1-py2.6.egg\foolscap\logging\log.py:265:add_event
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\foolscap-0.6.1-py2.6.egg\foolscap\logging\incident.py:35:event
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\foolscap-0.6.1-py2.6.egg\foolscap\logging\log.py:278:declare_incident
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] c:\tahoe-lafs\support\Lib\site-packages\foolscap-0.6.1-py2.6.egg\foolscap\logging\incident.py:85:incident_declared
2011-05-05 20:33:34+0200 [HTTPChannel,42,10.100.9.71] ]
2011-05-05 20:42:33+0200 [HTTPChannel,43,10.100.9.71] Unhandled Error
	Traceback (most recent call last):
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\rend.py", line 569, in _renderHTTP
	    return self.flattenFactory(doc, ctx, writer, finisher)
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\rend.py", line 528, in <lambda>
	    flattenFactory = lambda self, *args: flat.flattenFactory(*args)
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\flat\__init__.py", line 14, in flattenFactory
	    return deferflatten(stan, ctx, writer).addCallback(finisher)
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\flat\twist.py", line 63, in deferflatten
	    _drive(iterable, finished)
	--- <exception caught here> ---
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\flat\twist.py", line 24, in _drive
	    next = iterable.next()
	  File "c:\tahoe-lafs\support\Lib\site-packages\nevow-0.10.0-py2.6.egg\nevow\flat\ten.py", line 85, in iterflatten
	    straccum.append(item)
	exceptions.MemoryError: 

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now for the storage log:

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2011-05-05 20:29:01+0200 [Negotiation,8,10.100.26.102] Unhandled Error
	Traceback (most recent call last):
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\python\log.py", line 84, in callWithLogger
	    return callWithContext({"system": lp}, func, *args, **kw)
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\python\log.py", line 69, in callWithContext
	    return context.call({ILogContext: newCtx}, func, *args, **kw)
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\python\context.py", line 59, in callWithContext
	    return self.currentContext().callWithContext(ctx, func, *args, **kw)
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\python\context.py", line 37, in callWithContext
	    return func(*args,**kw)
	--- <exception caught here> ---
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\internet\selectreactor.py", line 146, in _doReadOrWrite
	    why = getattr(selectable, method)()
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\internet\tcp.py", line 180, in doWrite
	    return Connection.doWrite(self)
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\internet\tcp.py", line 431, in doWrite
	    result = abstract.FileDescriptor.doWrite(self)
	  File "c:\tahoe-lafs\support\Lib\site-packages\twisted-8.2.0-py2.6-win32.egg\twisted\internet\abstract.py", line 101, in doWrite
	    self.dataBuffer = buffer(self.dataBuffer, self.offset) + "".join(self._tempDataBuffer)
	exceptions.MemoryError: 

###################################################################### the gateway/client process quickly grow over 1,5Gbyte in ram, then it shrunk to 180mb, the storage process grow to 300Mb and stayed there