I am experiencing a weird network problem. I have a Windows XP desktop, and Windows 7 laptop and a Ubuntu laptop. All are on the same named Network which is called HOME All machines are on yet the 2 windows machines don't see each other, but I can see both windows machines shares from my linux laptop. The strange thing is, I have mapped one of the XP drives to the Windows 7 laptop and it saw it for about 2 days and now it doesn't. I checked that every computer is connected to the HOME network. What next? More importantly, why does this occur?