They're around..
Posted on a LA board this week. (they were fishing on the 31st)
http://www.kayaksportfishing.com/phpBB2/viewtopic.php?t=9605
My brother-in-law and I hit the water early in search of some rockfish. The day was going ok to start. We had a few rockfish and one 26 inch ling to our credit when we start seeing something blow up schools of bait. We both assumed that it was a thresher and were quite excited to watch it work. After about 20 min of splashes we see a shark fining about 50 yards from us. We both agreed that the fin was much too large to be a thresher but we decided to stay and fish nonetheless. About 20 min. after that we got quite a shock. A white shark in the neighborhood of 12-14 feet came directly under my kayak!!! 
He was no less than 3 feet below me when we made direct eye contact. The moment seemed to last forever. I know that if the shark wanted to knock me out of my yak that I could do nothing to stop him. But that did not stop me and my brother-in-law from hauling A$$!! The part that was the most terrifying came after I had been paddling for a solid 2 minutes at full speed. The shark was still clearly following my kayak just under and behind my right shoulder. That put the shark directly between me and my brother-in-law. While the shark never bumped my kayak he came within 3 feet on multiple occasions.
Crazy stuff... could of been worse...
Now the odds of getting killed by one of these things is pretty slim.
That said I bet it's just a matter of time before a kayak fisherman get's killed in So. Cal. by a great white. That said I still think you are far more likely to die in your car on the road to the beach then in your kayak on the water.
Jim