Sites with content that is gratuitously offensive or shocking, but not violent or frightening. Includes sites devoted in part or whole to scatology and similar topics or to improper language, humor, or behavior
If you don't mind giving your name and email address (or a name and email address) you can go to their suggest a database change page and submit a request to have the LJ url uncategorized.
It appears that it isn't just the Treasury who have bought services from the Websense company. Among the people impacted by this are military folks stationed overseas, including in Iraq. I'm wondering if it isn't pretty much government-wide.
Last time it took about a week to get things fixed, probably because they issue weekly database updates. It makes me cranky that it's there at all, but I know that's not going to change. The least they could do is put things in the proper bloody category.