Now I'm embarassed, turns out that fsx had mapped the landing gear to one of my throttles on the TM Airbus throttle, this trottle has several points in the axis that represents keys, and fsx had mapped raising the gear to the last "key" on one of those throttles so that when I put it in to full throttle it activated the landing gear toggle 😛
Thank you anyway for trying to help, problem is now solved 🙂