All of my Ubuntu machines were able to browse and connect to files shares on my Windows network. After upgrade to 12.10 I am able to browse the network and see the shares but when I click on the share I get a login dialog. The dialog is prefilled with my Ubuntu login name and WORKGROUP for the domain. I enter valid login and domain information. The dialog box goes away and returns a second later with the original information and the WORKGROUP domain. I am unable to connect to any shares.