Moody's sees disturbing muni bond trend.

While fears of widespread defaults in the municipal bond (MUB) market (perpetuated in December of 2010 by Meredith Whitney) have so far proven overblown, Moody's says a disturbing trend seems to be developing. Although only five defaults were recorded in 2012, that's more than four times the average yearly rate logged from 1970 to 2007. Perhaps the most notable thing about last year's five defaults: three of them were general government defaults as opposed to defaults on bonds tied to specific projects. The historical average for general government muni defaults: 1 every 4.3 years.