An anonymous reader writes "The X.Org Foundation, which drives the X.Org Server projects, Mesa, and Wayland open-source programs, had its tax-exempt status revoked by the IRS. It turns out the X.Org Foundation had put in quite a lot of work to become a non-profit organization, with guidance from the Software Freedom Law Center. They got in trouble after failing to routinely file their taxes on time. There's also been a host of other X.Org accounting errors in recent years. There was also the recent news of the IRS going after open-source projects, too."