Version:           SVN (using KDE Devel)
Installed from:    Compiled sources
Compiler:          GCC 4.1.3 
OS:                Linux

I'm using KDE 4 post RC 1 (rebuilt today), and it does not seem to handle characters that require usage of the Alt Gr key correctly.

To reproduce (in either kwrite or kate):
1) Create multiple lines in the file (e.g by pressing return multiple times)
2) Go to line X and put in a character that requires the Alt Gr key to make the character appear (for instance é or simply ~ on my keyboard)
3) Go to line Y and repeat the rest of step 2.

With my installation, this results in the character from step 3 appear at Line X Col1, when it should appear at Line Y Col ?.