Biggix: I don't know whether you have any but consider adding a slug of the Capital World Bond fund (about 5-7%) to juice things up a little bit. It is nice relatively conservative approach to dabbling in world bond market issues. Its five percent yield does not hurt either.
I currently have about 5% in Capital World Bond Fund and have been happy with the returns so far. I am thinking about moving out of it, since I have about a 2.5% gain in NAV and I think interest rates will rise soon and that will wipe away my gain.
Biggix:
Thanks! That is a useful feature I didn't know yahoo had.