[Newbies] Reading PNG images into squeak image is slow

[Mateusz Grotek]

It is (even on Cog).
What is the reason for that?
Is it a problem with the algorithm used in the image or it's unsolvable
inside the image and a plugin or FFI is needed.

P.S.

Code:
(PNGReadWriter formFromFileNamed: something) durationToRun "0:00:01:09.591"
"unacceptale if you want to program an image browser"

Data:
1301.png: PNG image data, 2048 x 1536, 8-bit/color RGB, non-interlaced
(a pic of a street taken from a cell phone)