I have an Item Updating event receiver that needs to fire when a document library folder is renamed. Everything works perfect when a user renames the folder with the SharePoint UI.
However, if they rename the folder with Windows Explorer, the event receiver doesn't fire.
Interestingly, if they create a new folder w/ Windows Explorer it fires Item Added -> Item Updating -> Item Updated (using "New Folder" all through the chain). But it doesn't fire again once they replace "New Folder" with the folder's real name.