Using query parameters ending with '_usage' is deprecated (since Zope 2.4...)
lots of products are still using the old notation (did a grep on 'modified_usage') and found:
CPSBlog, CPSBoxes, CPSDefault, CPSMailBoxer, CPSNavigation, CPSPortlets, CPSSchemas, CPSSkins
there are too many changes and too little test coverage to target it for 3.3.5, this could be targeted for a 3.4.0 release.
ZCatalog query using 'modified_usage' detected.
Using query parameters ending with '_usage' is deprecated.
Consider using record-style parameters instead (see lib/python/Products/PluginIndexes/README.txt for details)
warn("\nZCatalog query using '%s' detected.\nUsing query parameters ending with '_usage' is deprecated.\nConsider using record-style parameters instead (see lib/python/Products/PluginIndexes/README.txt for details)" % usage_param, DeprecationWarning)