I'm pretty sure I've read that magic weapons never lose their edge (sharpness). I also thought I'd read somewhere that they don't rust either and that the same applies to armor.
But what about environmental effects that would damage normal equipment? Would the same apply to magic items and equipment? For example, if I have spent a significant amount of time in a hot & humid jungle, does my +1 leather armor eventually rot away?
If anyone can provide D&D 3.5 citation it would be more helpful as I do not currently have access to supplements such as 'Sandstorm' & 'Frostburn'.