Imagemagick 6.2.4 sources

Hello list,

As the new versions of Imagemagick is soo much slower in converting  
PSDs to PNGs compared to the old 6.2.4 version I wonder if I can find  
those old sources somewhere?

I looked in the ftp at ftp://ftp.imagemagick.org:21//pub/ImageMagick/legacy/ 
  but can't find any.

Any pointers in the right direction would be great!

Thanks,
Henke