Duplicate meta and title tags = Google penalty?

Can anyone tell me if a site has either or both of the following will it be penalised by Google?

Duplicate meta description
Duplicate title tags

I've been told yes and no, so I am looking for some clarification...

 

hello most important thinks both site contain is fully different because google only revelency is first perfences so you create both site input title tags same but not same description and site contain.

 

http://www.seomoz.org/ugc/7-ways-to-tame-duplicate-content. Read this article as it will give you a head start.

 

Thanks it did answer my question, thanks!