Reasoning that at one time I was a fairly competent programmer and should be able to troubleshoot a little problem like a flashing cursor, I set about having a go at figuring out what was causing the problem.
After tearing a page apart piece by piece until the problem stopped, I came up with the following answer: It happens when a page has been loaded into an iframe on a main page that has an animated graphic.
Curses!
I now go in search of a solution. I might almost be willing to give up my happy little mommy monster logo. But the weather graphic in the upper left corner won’t make nearly as much sense if it isn’t animated.
I suppose the other choice would be to give up iframes. But, darnit, it works well.