I just installed 4.4.0 over the previous rev.12.860 - I noticed that there is a new empty db table "webdavprops".
My old network resources using WebDAV to point to Document Libraries on Liferay Portal are broken, and if I try to create a new one I get the error that the network folder is not valid.
The initial check of credentials (numeric UserId and password) are ok but after I get the error that the folder is not valid.
I have no errors on Tomcat's log.