Vista does not see XP in home network map. My story.

Hi, I post my story here; hopefully it could be to some help for someone. I have used my home network for years, never had problems, at the moment I have only two machines connected, my notebook with Vista Business and one desktop running XP Pro SP3. For some months ago I suddenly noticed that XP disappeared from the Vista network map after more or less an hour, XP could still see Vista, but Vista could no longer see XP. However, Vista could reach XP by typing \\"name" in the address field in Windows Explorer and I could do file transfers in this way, so there was communication between the two machines, but XP could not be seen in the network map in Vista in the normal way, and other programs did not find XP. The only way to restore the network map was to restart the Vista machine, but just to lose XP again after an hour. Later it did not help restarting Vista, the network map only showed the Vista itself, nothing more, and then after a while I noticed some new event errors: BROWSER EventID 8021, BROWSER EventID 8032. I know there may appear browser service conflicts in a home network, but still a bit strange with only two machines, but anyway, I disabled one of the browser services (XP). But this did not help at all, the only positive result was that the browser event errors stopped in Vista. I spent very much time googling, and found many people having more or less the same symptoms and the same event errors, but I did not find the solution, very frustrating. Then I noticed new event errors: Dhcp-Client EventID 1000, Dhcp-Client EventID 1003, and I started suspecting my broadband wireless router. I had received a new router (Inteno) from my ISP in September, exactly when my problems started, but the router was the last thing I suspected. I contacted my ISP, told them my story, they sent me another new router (Thomson), I connected it, enabled the browser service on XP, and voila! - Now Vista and XP could see each other in the Vista home network map with no problems. So the very problem all this time was obviously created by the router I received in September, don't ask me why, I don't know routers very well, it was configurated by my ISP. However, I have to inform, I finally did find out that Microsoft has a hotfix for XP exactly for this problem, Network Map Does Not Display Computers Running Windows XP, one hotfix for XP up to SP2 and another one for XP SP3. I have just downloaded the hotfix, but I changed to the new router before I reached to install the hotfix, but up to now my home network map is working perfectly well without this hotfix! I have it ready for install in case of more problems, but up to now, everything is OK. Finally I can sit down and relax. This story just for information. :D