My commute and only bike is 46.6 pounds:
http://sites.target.com/site/en/spot...?tcin=11125130

I hated it initially, but now I've gotten used to the weight. I did some basic tuning and its .. ok, now. It's just a 6mile commute (3 miles each way) but there is a stiff wind against me. I've canceled my plan of getting a lighter commute bike .. saving up for a nicer cuclocross bike instead.