Beamer: How to remove shadow under the title on a given frame?

Question

On one particular frame I would like to remove the shadow that the theme I am using inserts under the title. The reason is that with a black background (which I use only on this frame), it looks quite ugly.

Do you have any idea can I do that? I've managed to remove the shadow under a block environment, thanks to:

\setbeamertemplate{blocks}[rounded]% [shadow=false]

but I could not find a similar thing for \titleframe (except one that you can only put in your preamble - which would not help, in my case).

Thank you very much for your help.

Answer 1

Those interested will find two working solution here:

http://tex.stackexchange.com/questions/3139/beamer-how-to-remove-shadow-under-the-title-on-a-given-frame

I personally prefer the one that fixes the way shadowing works but a way to remove it is also proposed.

NB: sorry, I am not yet allowed to add a comment (but as this is an answer, I guess it's fine).