[support] tagadelic problem

Hi, There seems to be a either a limit to the terms that a category can store or when you enter % as a term the category ceases to be able to take entries for other terms - they all equate to % when you type them in and save the item. I am using the tagadelic module with a category that allows free-tagging. Which is the real problem and how do I fix it? Thanks in advance, Sarah