Have you tried completely removing it (and everything associated with
it)? That clears out all the configuration, so it may help. Also, you
may want to find where it's installed and remove anything that's in
there after you've removed it, just to be sure. I'd then redownload it
(try running sudo apt-get clean before you do this, it'll make sure you
don't have it's installation files sitting around anywhere) and
reinstall it. That should give you a fresh install of it.