DOWNTOWN , Glendale and Burbank were the only two Los Angeles County cities to make gains in office rentals in the first quarter of 2009, a stark contrast to the dramatic increase in emptying office buildings across the region. During the first three months of the year, an additional 2.5 million square feet of office space went on the market countywide. That figure grew from 1 million square feet of vacancies from the last quarter of 2008, and just 626,895 square feet last April, according to a new report from real estate firm Grubb & Ellis. For the full story click here