Content Language negotiator fails to get the correct object when using a browser:page with the same id of an existing object

[erral]

I have a multilingual website with the following structure (to simplify):

 http://website/soluciones/producto1/subproducto1 -> Spanish language

 http://website/solutions/product1/subproduct1 -> English language

I also have a browser view registered for objects of type subproduct called 'solutions', so I can have views like these:

 http://website/soluciones/producto1/subproducto1/solutions

 http://website/solutions/product1/subproduct1/solutions

The point is that when requesting  http://website/soluciones/producto1/subproducto1/solutions the "unrestrictedTraverse" in the content language negotiator, traverses to /website/solutions and therefore gets its language (english), setting LANGUAGE to en instead of None (it should fail, because the view object has no Language attribute). Here is the pdb session that shows the bug:

(Pdb) l
 26  	            contentpath = self.REQUEST.get('VIRTUAL_URL_PARTS')[1]
 27  	        else:
 28  	            contentpath = self.REQUEST.get('PATH_TRANSLATED')
 29  	        import pdb;pdb.set_trace()
 30  	        
 31  ->	        if contentpath is not None and contentpath.find('portal_factory') == -1:
 32  	            obj = self.unrestrictedTraverse(contentpath, None)
 33  	            if obj is not None:
 34  	                if obj.Language() in self.getSupportedLanguages():
 35  	                    return obj.Language()
 36  	    except ConflictError:
(Pdb) contentpath
'/ulma/productos/termoformado-y-blister/baby/solutions'
(Pdb) n
> /var/zope/downloads/eggs/cs.plt.contentnegotiator-1.3-py2.4.egg/cs/plt/contentnegotiator/patches.py(32)getPatchedContentLanguage()
-> obj = self.unrestrictedTraverse(contentpath, None)
(Pdb) n
> /var/zope/downloads/eggs/cs.plt.contentnegotiator-1.3-py2.4.egg/cs/plt/contentnegotiator/patches.py(33)getPatchedContentLanguage()
-> if obj is not None:
(Pdb) obj
<ATBTreeFolder at /ulma/solutions used for /ulma/productos/termoformado-y-blister/baby>
(Pdb) obj.Language()
'en'
(Pdb) 

[erral]

I hit preview but it seems that the bug was sent, agg.... This is the correct pdb session:

I'm using Plone 3.1.7 and 2.1 branch of PloneLanguageTool

2009-02-06 12:28:35 INFO Zope Ready to handle requests
> /var/zope/instances/3192ulma/parts/svnproducts/PloneLanguageTool/LanguageTool.py(375)getContentLanguage()
-> if contentpath is not None and contentpath.find('portal_factory') == -1:
(Pdb) l
370  	            return []
371  	        try: # This will actually work nicely with browserdefault as we get attribute error...
372  	            contentpath = self.REQUEST.get('PATH_TRANSLATED')
373  	            import pdb;pdb.set_trace()
374  	            
375  ->	            if contentpath is not None and contentpath.find('portal_factory') == -1:
376  	                obj = self.unrestrictedTraverse(contentpath, None)
377  	                if obj is not None:
378  	                    if obj.Language() in self.getSupportedLanguages():
379  	                        return obj.Language()
380  	        except ConflictError:
(Pdb) contentpath
'/ulma/productos/termoformado-y-blister/baby/solutions'
(Pdb) n
> /var/zope/instances/3192ulma/parts/svnproducts/PloneLanguageTool/LanguageTool.py(376)getContentLanguage()
-> obj = self.unrestrictedTraverse(contentpath, None)
(Pdb) n
> /var/zope/instances/3192ulma/parts/svnproducts/PloneLanguageTool/LanguageTool.py(377)getContentLanguage()
-> if obj is not None:
(Pdb) obj
<ATBTreeFolder at /ulma/solutions used for /ulma/productos/termoformado-y-blister/baby>
(Pdb) obj.Language()
'en'
(Pdb) baby = self.unrestrictedTraverse('/ulma/productos/termoformado-y-blister/baby')
(Pdb) baby
<Product at /ulma/productos/termoformado-y-blister/baby>
(Pdb) baby.Language()
'es'
(Pdb)