Firefox does not open .PNG files anymore

[stan]

Marcelo Magno T. Sales wrote:
> Hi,
> 
> Since recently, possibly after the upgrade to 3.0.6, Firefox does not 
> open .PNG files anymore. When I click a link which points to a .PNG 
> file, Firefox asks for an external application to open the file instead 
> of opening it directly in Firefox. How do I get the old behavior back?
> 
> Thanks,
> 
> Marcelo
> 
I don't think that is due to the upgrade to 3.0.6.  I'm running that version on F10 and it shows png files just fine. 
Maybe it is a configuration in about:config?