There is something weird in the UT/UED mouse/kbd driver interfaces.
My UED has exactly this same symptom, it crashes if I move the mouse TO THE LEFT too fast. The movement can be rotating, panning or something else. What matters is that the mouse is moved TO THE LEFT fast enough. Even on empty map it will crash if I do this.
Another anomaly is the keybord driver. I have configured most of the movement keys on the numeric keypad. Sometimes for no apparent reason one of the keys "stick" down. This is most annoying. You just keep on strafing to the left (or back) no matter what You type. Exiting and reloading UT will NOT help this, You have to reboot the OS.... (LOL for WIN98). It may have something to do with pressing down multiple keys with some control keys and then releasing them in "wrong" order. Also, I have a strong feeling this happening on some Insta servers only ... (paranoid).
My UED has exactly this same symptom, it crashes if I move the mouse TO THE LEFT too fast. The movement can be rotating, panning or something else. What matters is that the mouse is moved TO THE LEFT fast enough. Even on empty map it will crash if I do this.
Another anomaly is the keybord driver. I have configured most of the movement keys on the numeric keypad. Sometimes for no apparent reason one of the keys "stick" down. This is most annoying. You just keep on strafing to the left (or back) no matter what You type. Exiting and reloading UT will NOT help this, You have to reboot the OS.... (LOL for WIN98). It may have something to do with pressing down multiple keys with some control keys and then releasing them in "wrong" order. Also, I have a strong feeling this happening on some Insta servers only ... (paranoid).