Not gimp, but Pixel
http://everlong-design.com/design/pixel-a-photoshop-alternative/Multi-platform advanced photo editing comparable to photoshop, can't wait to see how my ps3 works with this under ubuntu
although it's not freeware, it's only $38 currently and is very much more affordable than photoshop.
Cool thanks I'll have to check it out, I've been pretty happy with Gimp and PSP up to now, but I'm always looking out for something that may be better.