@nydia2013,
I think you're experience is out-of-the norm.
My experience with ISP support has been (when and if they ever come on the phone live) that I might not live long enough to get a useful answer - unless it has to do with an Internet connectivity issue.
Furthermore, Comcast has been voted pretty low by many consumers and has about the worst level of customer and/or tech support of all the major ISPs. However, your mileage may vary.
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Back to the subject at hand, if it were me, I'd either call Apple Tech support or try a Mac User group and pose the question on there.
Actually, Dale, have you asked your wife to help you? Perhaps she knows or can help you compare the 2 application settings between you old computer and the new one?
{Edit: I Googled MacKeper on the 'Net. This is generally a useful step I try first whenever I have a problem. Here's the link to MacKeepr and its use:
http://www.imore.com/avoid-mackeeper}
An excerpt from the linked page may answer your issues, Dale:
"Literally every time I work in the computer store, we'll get a customer whose Mac is plagued with problems they don't understand: Their Mac is acting slow. It crashes. And more. And in more cases than not, we find that they've installed a program called MacKeeper. Removing MacKeeper fixes the problem. So what is MacKeeper and why should you avoid it? Read on for details
MacKeeper was originally developed by a company called Zeobit and was sold a couple of years ago to another firm called Kromtech. The software purports to be a suite of more than a dozen individual utilities that are actually supposed to improve the performance and stability of your Mac — antivirus software, optimization software, junk removal tools and more.
MacKeeper uses scare ads that appear as "pop-under" ads on web sites, telling people to clean their Macs. The pop-under business is the first thing I really don't like about MacKeeper. Quite frankly, I think it's a real bottom-feeder technique and a really low-class way to do business, and it tells me that they're not concerned with what people think of them.