Britney Spears' Ex -- Enemy of the State

Britney Spears isn't the only California resident her ex paparazzo boyfriend has allegedly stiffed over the last couple of years -- he apparently screwed the rest of Cali's populace by not paying his taxes on time.

TMZ has obtained a lien filed by the Governator's tax henchmen, which shows Adnan Ghalib didn't pay $4,370 in state taxes in 2007.

It doesn't seem like a whole lot till you factor in the following:

-- $2,185 in penalties
-- $658.97 in interest
-- $352 in collection fees

That brings the total to $7,565.97. Lesson here? Pay your taxes on time, people ... and landing strips aren't meant for your face.