We are having an issue that sometimes (different folder and different file types and different users) a file doesn't inherit to the child objects. Today we had a file that the parent folder had the correct permissions (the folder was inheriting from its parent) but the child object had different permissions.
This is fixed by re pushing the permissions, but when I tried to recreate the issue I couldn't. I created a file on the root of C:\ and gave it static permissions. when I put it in the folder on the share, the permissions were replaced with the inherited permissions.
We are using windows 2003 and backup the server with Backup exec, we have auditing turning on but not on that folder.