In SharePoint 2010, I am not able to delete particular file from a document library. while trying to delete the document, its says ACCESS DENIED. I logged into site using SERVICE/SYSTEM ACCOUNT, which has full control. I cannot perform any action on that document.when i try to download the file, its says CANNOT PERFORM THIS ACTION. TO delete the file,I opened the document library using "Open with Explorer" and "Sync with SharePoint Workspace", but I don't find the file which I'm trying to delete.