On Fri, 23 Mar 2007, Ioannis Vranos wrote:

> OK, I asked from the single application installation perspective, 32-bit one
> if the 64-bit version is not available.

Ok, the short answer is "yes".

A slightly longer answer is "yes, unless it requires shared objects not 
available as 64-bit builds, and unless your app is 'really smart' and 
decides for itself whether it will work on this platform or not".
 
> Since you mentioned firefox, is there an 64-bit adobe flash plug-in available
> for firefox x86_64? What happens with the current 32-bit extensions for
> firefox and thunderbird regarding firefox x86_64?

Short answers are "no", and "you use the 32-bit firefox or you don't get 
to use the plugins which are not available as 64-bit objects".

-- 
Stephan Wiesand
  DESY - DV -
  Platanenallee 6
  15738 Zeuthen, Germany