@Diane,
I can't really help, but it sounds kind of what happens to me, and I use some kind of MS Internet Explorer under Vista. Sometimes I click them and it just sits there. Sometimes it goes to the web site. I have a little block in the uppper right part of the screen that shows a little circle indicating that it's going to the link. If that circle doesn't look like it's rotating, I have to double click the link. I do not know why doing the same thing produces different result. Hope this is all the problem you are having.
Hey, I'm going to be in town Wednesday p.m. and most of Thursday. Hope I won't miss you this trip - again.