OK, can someone having still this problem give this a try? I'm curious.
I mentioned that I hadn't rebooted my computers when my problem disappeared, but what I remembered is I rebooted the router.
My email program wasn't connecting. When that happens I pull the plug on the router for a few seconds, plugged it back in, and that works to get me connected to my email at its usual fast speed. Typically I can still connect to the internet when this happens, but everything is slower. Maybe my virus program messes with my email program too much for the email to connect.
I'm just wondering if rebooting the router gave me a new ISP addy (doesn't it do this?) and DC treats my computers more friendly.... Everything is working just great again today, too.
Of course, if you don't have a router, ignore this post