It seems to be reported from time to time, riptus. I suggest you make sure the idler pulleys that belt runs around, are free (not half seized up) and not wobbly. Check that there is no bent mounting or poor alignment anywhere in the belt run. If all that is OK, check whether the belt is worn out, which is the most likely cause of the problem, but it makes no sense to put a new belt on a faulty belt run, since that would simply ruin another belt. Look on the flat bottom of the belt for signs that it has been bottoming in a pulley, and look in the pulleys for signs the belt is running too low in them. If it has, belt, pulley, or both are worn out. Usually you can wear out a couple of belts before the pulleys are worn out.
