OK, I uninstalled ZA. Of course, the uninstall routine froze and had to be ended through the Task Manager. I restarted it and it completed fine. Then the laptop wouldn't restart when instructed, so I had to force a shutdown.
Then, upon restarting, it won't connect to my wireless. In the "Connect to a Network" screen where it lists available wireless networks, it says "Connected, but with limited Access", but every where else (network & sharing, etc) it indicates "Not Connected". If I try to disconnect and reconnect, I get a message that it's taking longer than usual and then it fails.
If I select 'diagnose' I get a couple of options. One was to make sure Iv4 & IPv6 are on. Well, I had disabled IPv6 a few steps back, so I tried turning that on. Didn't help, I turned it back off. Another was to move the computer. It's in the same place it always was, maybe 3 feet from the router. The third one just says that the wireless card may be having difficulties or something. Duh.
Also, when I initiated the uninstall of ZA (after disabling the wireless through the switch on the front of the laptop), the Windows Security message I expected flashed briefly, then went out. When I went to turn on the Windows Firewall, it was already on. I'm almost certain that I did not have them both on (I know that's not a good idea), but would the Windows Firewall turn itself on?
So, now I've got nothing. No internet, no email, no IM, no shared drive. Sigh. I suppose that this may mean we are getting close to the real problem, but for now it's worse.