For those who bemoan the lack of Photoshop on Linux, it's possible that a competitor to GIMP could fill that need… maybe.
If the lack of a native port of Adobe Creative Suite (or The GIMP's peculiarities) is a problem for you on Linux, check out Fog Panther, which describes itself as "a professional image editor" built ...
Most Linux problems aren't complex. They're poorly observed. These are the exact commands that I run before troubleshooting ...