Do you 'need' the Yahoo toolbar? You can set Yahoo as your search engine by choosing Tools, Manage Add Ons and then click on Search Providers. Choose Yahoo, Click on Toolbars and Extensions and disable Yahoo Toolbar (right click, disable). Restart IE. The problem with toolbars is that their behavior is unpredictable.

Thanks for the responses ! For some reason the problem is not present today. Or I should say "problems." The two issues (the clicking sound when depressing a key and the inability to press the same key twice without pausing for a couple seconds) both resolved themselves (proving at least that they must have been related). grandms, It's an HP laptop, so the keyboard is integrated. It was not listed as a separate device in the Printers and Other Hardware section. And the Device Manager (which I also checked) didn't have anything of import either. :-( genes, Yes, she already has that, as well as Avira AV and SAS. I will be running those scans for her soon. I only asked my question before doing so in case anyone might have known of this issue and knew it to have some other obvious cause. Well, for now it's a mystery. But if my scans find anything I'll post an update, just for information's sake. Thanks again !

You have to consult the Trane documentation of 20+ years ago to figure out how the heat pump connections (B, X2, and T) work in the old system. Not all manufacturers are consistent on how these operate. The other interesting thing is that the heat pump works in either normal or emergency mode. The auxiliary mode is disabled. I don't follow how that works. The is only one R connection on the old thermostat. This would imply to me that the same transformer is connected to the boiler and both heat pumps. This seems strange but I guess it is possible. The other thing that needs to be done is to draw a wiring diagram. From that you can draw a diagram for the new thermostats. This can be done, but it is difficult to advise you without having all the wiring information. Do you have an idea how much money it costs to heat and cool the house? The numbers may inspire you to start planning for replacement equipment sooner rather than later.

You definitely don't have to use yahoo simply because you are with uverse. Just because they give you a free email address there nothing says you have to use it. I have never used the email address provided by my provider. I am with comcast they provide an email address, but I have never used it ever. I continue to use my Hotmail which I can access from any pc or tablet anywhere. Changing your address is really not a big deal anymore. Just send out a blanket email to your address book letting everyone know the new one. If you are registered at places with the email address then you can change it easily on the site, they all have an option for that. We all make changes, this is a fairly easy one.