"The GIMP for Windows is not really targetted at end-users yet. The program(s) might crash unexpectedly or behave otherwise strangely. (But of course, so do many commercial programs on Windows.) The stability seems to depend a lot on the machine, display drivers, other software installed, and whatnot. Presumably the more memory you have, the better GIMP works. (For any real image work, I would say 128 megabytes is minimum.) Many people do find GIMP very useful. But it is not a Photoshop killer (for real Photoshop users, that is), Photoshop has lots of features that the GIMP lacks"