These look decent, from REI - All with 36 inch inseam
Sahara Convertible Pants
Utltra Light Pants
Update, went to REI a couple days ago. I recommend:
Sahara Convertible Pants - Extremely light, roomy and comfortable, lots of pockets. My FAVORITE, light, roomy, comfortable and nice a long. Checked again in January 2013 and they still have these.
Adventures Pants- Very comfortable, light, even stylish. I think that I could even wear this as a light casual pant. Love them. Note that placing larger bulky items (large wallet for example) in a front pocket will stick out.