I downloaded a minimal master page template from here: http://startermasterpages.codeplex.com/ and created a new master page based on it. Then I set it as default master page in SPD2010.
Everything works as expected except for one thing:
After I click on some links, such as "Add Document", a lightbox pops out displaying an upload page which uses my new custom master page. All the menus and other things I put in my custom master page are there. Ofcourse this isn't the thing I expected. With OOTB master page there wasn't an issue like this.
Could you please help?