Originally Posted by 2manybikes

No derailleur problems since 1994. Most derailleur problems are sticking cables. Internal hubs have cables too.
One big problem is bringing a cold bike into the house, then it condenses and sweats like crazy. Then taking it outside and the water or "sweat" freezes in cables etc. Keep it cold or bring it in all night until it's dry. This accounts for quite a few "deraileur problems" that I have seen. Condensation in the cables or other places turning to ice.