CARL,
SUSA did excellently for this primary. Similarly, Rasmussen blew 2000. Good pollsters can have bad years, and good pollsters have bad polls in good years. I think this is a bad poll. PPP does not have enough of a record with General Election polling to give them "bad pollster"status quite yet. As hilarious as their Pennsylvania primary poll was, we can see from SurveyUSA the dangers of projecting that to the General, as you yourself said.
Can you provide a link to these California polls? I think you're confusing PPP with PPI, but I may be wrong. I don't remember any PPP polls before this year, and I don't know what they'd have been polling in California in 2007 -- initiatives?