1. Uninstalled Norton 360 on XP machine with no difference on either network.
2. Uninstalled Norton 360 on Windows 7 machine with no difference on either network, except that I lost the XP machine icon on the Windows 7 network map.
3. On both, after uninstalling, received the [x] security error that no firewalls were running, so I assume Windows firewall remained closed.
4. Reinstalled Norton 360 on both machines, XP and then Windows 7, and everything back the way it was, on XP machine, all shares show and are active, on Windows 7 machine, XP machine still shows but cannot connect.
While Norton was uninstalled on both machines, I shut off modem to prevent internet access for security. Reset and tried all diagnosis links to see if I could get XP shares on Windows 7 network, but no luck.
As an aside, on the XP machine, all shares from either XP or Windows 7 on the dual boot machine show under My Network, depending on which I boot into.
However, on the machine with XP/Windows 7 dual boot, XP does NOT show shares under My network, however I can map the XP machine shared folders to a drive letter, which displays folder items fine. Under Windows 7, I cannot even map the shares on the xp machine.
Again, the XP/Windows 7 machine is wired to the router, with the XP machine Wireless (in case this might make a difference).