I have two computers that share a Lynksys Realtek/router using Ubuntu. Yesterday, I could access all my files/documents, etc. Today, I went to work and cannot! The LAN is connected. The router is working. The internet is working. I have run many virus scans and there are not trojans or viruses. The files and documents will not open and I get a path/access/contact your administrator error message. To make matters worse, when I check in My Network Places the Ubantu is no longer listed. However, again, my LAN is 'connected' and 'enabled.' Anyone have any ideas?