Problem still seems to persist, so I've not a scooby. Strange how it would work straight outta the box with Natty but not Peppermint, but I guess that's what happens, haha. Just clear up a few things btw, I'm using a version of Photoshop CS5 that was adapted specifically for Ubuntu, so that it would run seamlessly (in WINE) which it did in Natty.
I guess there must be something that needs changing.
I guess it's time to face the music and take on GIMP. >.<