optipng works on amd64. Please mask it ~amd64 or amd64. I've used it to compress hundreds of png images from icons to screenshots and totaled several days run time.
- media-gfx/optipng-0.4.3 (masked by: missing keyword) - media-gfx/optipng-0.4.3-r1 (masked by: missing keyword) - media-gfx/optipng-0.4.5 (masked by: missing keyword) which version? also, please take a look at http://www.gentoo.org/proj/en/base/amd64/technotes.xml?part=1&chap=3
I used 0.4.5
Marked in CVS. Thanks!