Fix broken WebDAV

Repair a broken WebDAV so that we can once again create folders and drag & drop files across. Currently I'm able to log in just fine, but if I attempt to create a folder it fails and I get a message saying, "You do not have permission to access this web folder location", followed by "Unable to create a folder". If I try again, it fails and I get a massage saying "Unable to create a folder named 'New Folder'", followed by "Unable to create a folder. Please enter a different name". If I attempt to drag over or copy and paste a file from my local machine to the web folders, it fails and says, "An error occurred copying some or all of the selected files". Strangely, I am able to rename existing files and folders without any issues. We're using a Linux virtual server, running CentOS 5, and you will need to be able to SSH in, as there is no panel.