I'm printing all suggestions out to have on hand. I'm doing the best I can in terms of responses--I really do appreciate the suggestions but I'm not a computer person so I don't always know the answers.
Only Internet Explorer crashes. I get a pop-up error message and then the program shuts down. The computer itself has never crashed or frozen up, and I have never needed restart it or anything like that. There are three computers on a DSL line; I think my mother's computer is the "main" one (I know that mine is not).
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