There are lots of 2-person tents around that weigh close to 2 lbs., and plenty of solo tents at about a pound and a half. Here are some:
Tarptent
Six Moon Designs (Check out the new Vamp and Haven with net inner tents
Gossamer Gear
Mountain Laurel Designs (floorless pyramids)
Z Packs (probably the lightest weight tents currently available)




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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey