Most "user" open source software sucks a hell of a lot. I am currently having a running battle with xcircuit.

This program is supposed to draw circuit diagrams, yet it saves it in PS format! It manages to fuck everything up. The user interface and everything about the program is unbelievably bad.

Most open source software without a large market share is like that. It is unfortunately the OS mentality.

And don't even get me started on the entanglement of all the software packages. If I download a program to install on Windows it install. For linux the program depends on 120 other packages (a type of incestuous package relationship)