As you told wacko, the problem is Frontpage. It makes code to be compatible with MS products, not compatible with W3C coding standards.
Using dreamweaver is already much better but to be 100% sure the code is ok, i always verify tags myself, never trusted editors on that. W3C recommends to stop using <font> tags, and some other tags, and use CSS instead to specify styles, it also has the advantage to produce smaller files (less tags in them), but editors are not implementing this 100% yet.
Want to be sure? drop frontpage, unless you know how to clean the FP code, and use an application that implements the coding standards established.
There is another cool editor, html-kit, freeware with nice features, plugins SDK and a lot of community-coded plugins. You can customize a lot of stuff on this app. I stopped using it because at work they used DW and i got used to it, but html-kit is worth a try if there is no "standards" established where you need to code pages.
http://www.chami.com/html-kit/