Re the OP:

This info on this site seems pretty good (lots of other interesting links too):
http://extension.usu.edu/foodstorage/htm/white-rice

Apparently, brown and wild rice (and presumably brown basmati, yum) are not suitable for long-term storage, as they go rancid over time. This makes me sad -- I find brown rice infinitely superior in flavour and staying power, not to mention fiber and vitamins/minerals. Personally, I would buy extra brown rice and cycle through it in normal household use.