Atlanta’s two largest arts organizations, the Atlanta Symphony Orchestra and the High Museum of Art, have been slashing budgets and negotiating wage freezes in recent years, desperately working to balance their books. But the fiscal austerity apparently doesn’t extend to the executives in charge of the troubled arts groups: High Museum director Michael Shapiro’s salary has jumped $155,000 since 2000, and ASO President Allison Vulgamore’s pay has ballooned from $275,000 to $440,000 in the same period.