I have Dark Forces installed, english one; but I use the keyboard for the game only. I will have a look into playing it with the mouse. Did you run the Setup file to set the mouse...was there an advanced option for the mouse. I know they exist for build games such as Blood and Exhumed. Will check it out later..

Yes, there is a setup for mouse, keyboard etc. and I used it too. It's much more advanced than that silly thing which comes with the demo version.

There is one odd thing I noticed: Having the game just installed, there is nothing displayed for turning in the mouse setup menu. If I leave it alone, the turning is somewhat slower (in a positive sense), though the mouse strafing behaves really strange then, ie. press the strafe button and move the mouse, doesn't let you strafe with the mouse movement but rather accellerate in the direction. You have to move the mouse back on order to stop again. If you don't and press the strafe button again, you'll continue stafing. Quite unusable that way.
Setting mouse turning to x axis, the behavior is as described. Besides the huge difference in sensitivity, the game behaves like expected.

I got my hands on the english version as well. That setup bug doesn't seem to be there, though the anoyingly low strafe sensitivity is.

I guess, a patch for independend strafe and turning sensitivity would be appropriate.