After I put in my username/password it goes to a blank white page and refreshing the will show that I am still not logged in. I have to clear my browsers cache to be able to log in when this happens. It will work normally after I clear the cache but this happens frequently.
You don't say what browser you are using or what version of FishEye you are using. Are you going directly to FishEye or through a webserver such as Apache?
Have you tried other browsers? Do they behave the same way? That would help to know if it is a browser problem (I suspect something odd because clearing the browser cache fixes the issue)