I've spent quite a bit of time today on the phone with various Comcast employees. The bottom line is that a service technician came over and checked everything. My computer is fine. The signal is good. The connections all connect. It all checked out. Somehow I'm online and able to surf the net. I can comment on blogs, post my blog entries, and send email. They must have done something at the "office" or wherever the controls are because mine is working and so is my friend who lives a couple of streets over. She called and had a technician there, too. Whatever it is, I'm glad to be back online at night and able to send email! Thanks to all those at Comcast who made this possible.