Mel's Girlfriend -- Don't Squat on Me!

Mel Gibson's pregnant GF, Oksana Grigorieva, is suing the web hosting company that bought her domain name.

Oksana has filed a lawsuit in L.A. County Superior Court, claiming DreamHost.com is cybersquatting by creating OksanaGrigorieva.com. The suit claims DreamHost put up a "fake website," making it look like it was her official site.

And the suit claims there is false info about her on the site.

BTW, the site is down -- at least for now.