By THE ASSOCIATED PRESS Filed at 12:48 a.m. ET SAN FRANCISCO (AP) -- Dozens of Californians, some delivering their messages in songs and poems, vented their anger Tuesday at the commission that approved electricity rate increases for customers of the state's cash-strapped utilities. ``Your stench of unspoken arrogance disgusts us,'' said San Francisco resident David Alt, reading from an acerbic poem. ``You are cronies for big business,'' said Oakland resident Joel Tena, sneering. The Public Utilities Commission last week approved rate increases of more than 40 percent for customers of Pacific Gas and Electric Co. and Southern California Edison ...