bump - now that the Calif. city/town numbers are out. The Bay Area obviously did, SD missed narrowly, haven't checked the others.
Depends on what type of SD suburb we are talking about. Obama won the coastal and affluent 50th CD 51-47. He lost by more than that in the inland redneck/middle class 52nd CD. He also did very well in the inner suburbs of San Diego.
I'm defining suburbs as "metro area - central city". In this case, metro SD is just SD county. According to this site , Obama won the city of SD 62.5%-35.7% and McCain won the remainder of the county 50.5%-47.8%.
There are plenty of places that are definitely "suburbs of San Diego" by any reasonable definition but which are technically in the city of San Diego proper, so you do have to be quite careful.