That wont cause the problem you have anyways but that is very strange too, what are you using to upload?
You wont pass a strick validation anyways there are quite a few errors in your coding to pass a strit validation. The font tag has been depriciated and also all your styles will have to be in CSS to pass strict validation, you are also only using half of the doctype. Oh and you have two keyword meta tags.
This site has a list of full doctypes.
http://www.w3.org/QA/2002/04/valid-dtd-list.html
New sites should be using the strick doctype transitional is for old sites that have not been redesigned for the new rules set to pass a strict doctype.