firefox, scaled images, and performance?

[Konstantin Svist]

On 12/27/2010 09:20 AM, Tom Horsley wrote:
> Has anyone else noticed a distinct tendency in firefox to
> get hopelessly bogged down and unresponsive when it is
> displaying a vary large image it has scaled to fit on the
> screen, and then to become perfectly responsive once you
> click on the image to display it full size?
>
> For example:
>
> http://www.widescreenwallpapers.in/bulkupload/widescreen/HD/Arctic%20sunrise.jpg
>
> If I try to do a "save image as" and navigate around the
> file browser to save the image in a directory it takes
> a little time to navigate to, the browser gets all hung
> up.
>
> If I first click on the image to make it full size, I have
> no problem navigating anywhere.
>
> What the heck is firefox doing? Am I the only one who
> sees it?

You're not crazy, you just didn't describe how to reproduce the problem.
Using above example, open the Save Image dialog but don't bother 
browsing. Instead, just drag it around the screen in front of the image 
-- it's VERY slow compared to unscaled.

Or maybe I'm seeing a slightly different problem. But then I'm using an 
SSD so if browsing files slows down 2x I wouldn't even notice...