photoshop died on my mac.

it won't load anymore; when i click on the photoshop dock icon it crashes my computer.

so now i got rid of my mac, since without photoshop, it's useless. how much does ubuntu cost?

Use the GIMP. It's a free (as in freedom) photoshop replacement, you can run in on OS X. It's easy to learn, there are 10 times more filters than in Photoshop, and it's scriptable using script-fu.

Stop furthering adobe's monopolistic "industry standard". The GIMP can open PSD files, and people locked in the past will be able to open the files you will create with the GIMP.