Ok, here is an example of the problem. (Once again I am at work and had to do this from memory). http://www.logicmazes.com/links.html
This is the main site and when I click on the link about 1/3 of the way down called Web Sudoku it sometimes takes me to Google homepage or eBay homepage. I can type the address into a blank browser and it will take me to the intended site. However, when I click on it directly it occasionally sends me elsewhere.
I will try some experimenting when I get home but I think this most often occurs when I click on a link that takes me to a different site. For example, if I am on the ESPN site and click to go somewhere else on the ESPN site there is never a problem. However, if I click on something that takes me outside ESPN it redirects me to an unintended place. I can copy the link and paste it into a browser and it will work but not from a direct click.
This is why it is so perplexing. It does not always happen and I can detect no other weirdness (home page is not altered, no bizarro favorite places, etc).
I can ignore this for now. I'd just rather not have it escalate into a larger problem if left unchecked.