OK, I posted here a while back with issues home networking, specifically between varying operating systems (Ubuntu 10.04, Windows XP, Windows Vista, and Windows 7...sigh). Either way, suddenly the other day, I was on my desktop and noticed that I could find my girlfriends Windows XP machine via Samba. Previously, I was accessing her shares via IP address, and only IP would work. I couldn't do a permanent mount because I don't have a static IP set up on her machine (that and it's only a bandage). Anyways, so I noticed that I could directly access the Workgroup, view her shares and print to her printer via computer name. Aside from that, my Windows Vista laptop could access both her and my samba shares. Everything was working fine. Today, it's not. No settings or configuration have changed at all. Today, I'm forced again to access her shares via IP, and she can't get to my samba shares at all. I have no idea what the issue is. I previously thought that there was some DNS issues, but occasionally it seems, domains names and computer names are being resolved correctly. I have no idea why one minute it works and the next it doesn't. Any ideas?