Here's the link to an article I found that talks about that question.
http://blogs.zdnet.com/doc/?p=771
I don't have enough data to personally state one way or the other. I do know we use a lot of paper. The digital revolution has not resulted in a paperless office. Rather it has given us the ability to print many more copies and make many more changes, resulting in an excess use of paper.
As environmentalists have slowed down the harvesting of crop forests (those grown by large corporations specifically for making paper), the US has turned to foreign sources for pulp wood. This has resulted in a more rapid cutting of the Amazon rain forest and other areas. We have saved an owl, but are we cutting off our oxygen in the long run?