I have Norton 360 running on a windows 7 machine. In settings--Firewall--Programs, I make a change for a program to go from allow to block. Before closing, Norton asks me if I want to save changes. I say YES and NOrton closes. When I open Norton to check, I find that the change has not saved. On other machines with the same software I have have no problem making the changes. What can be causing the issue on this machine?? I also went into Settings and on the Firewall page, reverted to default settings. No change unfortunately