Disability while navigating in MT

I can’t judge if my problem has been addressed in another thread. At least the symptoms I have have not been mentioned yet. (Operating system XP with IE 6.0) For about 2-3 days (I can’t say exactly anymore) the PC slows down for a few seconds, then something comes in the lower line with “ebayrelevanced” or similar. After that comes an error message that a script slows down something and the question whether the script should be canceled. Adopting this question, everything continues normally until next time. What triggers this effect I can’t say, but it’s completely related to a “renewal” at MT. How can you turn it off and is it absolutely necessary that MT is permanently “improved”? Do I always have to update anything in the future to be able to participate in the forum? I actually have other hobbies. Greeting navec