Hi All, I have 4 machines in a small home network. They use the following: Vista Home Premium x1 Vista Ultimate x1 XP x2 My problem is with the Vista Ultimate machine. My NAS (a Synology DS107+ with 1GB HD) on the Ultimate machine has dissappeared from my network. All the other machines do not have a problem. Even stranger, I had mapped the folders of the NAS , so in normal browsing views I can see and access the NAS folders with no problems. Does anyone have any ideas please? Thanks. Mike