The w3 validator is there to show you all the mistakes in your code which add to rendering time and make pages render incorectly across different browsers.
Drop the tables and use CSS instead, you'll find accurate code much easier then.
Disclaimer. (1) Whilst I will help you sometimes, if I feel like it, and my advice in relation to your actual question will be of good quality: my posts are to be taken with a pinch of salt. I will be sarcastic, deploy irony and include obscure cultural references for my own amusement without warning.
(2) You will gain nothing from complaining, and if you try to argue with me then you will not win. No matter how noble your battle seems, I am still better than you, don't be an hero.