[wp-hackers] some URL's Firefox gives open 'application/x-httpd-php' dialogue box?

[Andre SC]

http://wordpress.org/support/topic/89039

Hi
 when trying to open some WordPress URLs Firefox has started to 
interpret it as trying to open some kind of application. This happens on 
only some machines (both PC & Mac) and not others.

I notice that there is usually a trailing backslash involved, and the 
page opens fine if manually removing said backslash.

Seems the phenomena is spreading so thought I'd mention it here, hope 
it's not too off topic.

Regards

Andre SC