I have never heard of this before. By forward jumping action you mean just holding down jump, right? Maybe you somehow have your jump key bound to look up?
It might be possible if you construct a .pk3 of an existing base/lugormod map. You could try creating a server and switching the map to the base map name, never tried that. (Though most likely not possible).
Just enjoy um_bespin.
If you have the .dll for the current driver you are using, stick it in your gamedata folder, and it will force the game to run off that driver. On the other side, check and see you don't have any out of the ordinary .dlls in your gamedata or MBII folder.
Well servers that are player owned should be able to have the right to enable it. If you don't agree then just don't play community servers. I don't know how this is on EU's end of things but I don't see too much admin abuse over here.
SetTK is not used on US Official Servers. But I disagree with you on the Mute command. I have only had to use it once, but it is an effective tool for spammers/advertisers.