<p>Sacramento -- California's budget mess will grow by $544 million because of cost overruns in the state's prison system, $90 million of the problem stemming from pay and benefit increases Gov. Gray Davis gave to state prison guards.</p>
<p>Adding this year's projected prison spending deficit to the state's existing cash shortfall means Gov.-elect Arnold Schwarzenegger must close a gap of at least $8.5 billion.</p>