TMZ has learned Oksana Grigorieva is P.O.'d because her attorneys just got paid $250,000 from Mel Gibson ... while she got a grand total of zero dollars.
Last month Judge Scott Gordon ordered Gibson to pay a quarter million bucks in attorneys' fees to Oksana's legal team -- which he did.
But here's the thing -- sources close to Oksana tell us she was led to believe her attorneys would break her off a chunk o' that cash. We're told that hasn't happened.
We're told Gibson has been paying child support to Oksana, but sources say she desperately wants more than what she's been receiving.
So, let's review the scorecard: Oksana's lawyers -- $250,000Oksana -- $000,000