node_access problem

I have a problem with refreshing node with insertnode tag after cache filter expiration. The problem exists when there is no logged user (anonymous). After login as admin and cache_fillter table clean, the cache filter is properly generated.

For debugging I clean cache_filter table, and modify an insertnode module to return TRUE on 'no cache' query in InsertNode_filter function. When I logged in as admin there was no problem, when I logged out then InsertNode didn't work.

With anonymous user the node_access function always returns FALSE, but with user admin node_access returns TRUE because admin has a 'node administer' privileges. I think, that node_load function should be invoked before checking node access and node object passed to node_access inspite of nid.

There is a small patch in attachment which works for me perfectly.