I was looking at the [isotopes of technetium](http://en.wikipedia.org/wiki/Isotopes_of_technetium) page on Wikipedia recently, and it seems that the metastable  $\ce{^{95m}Tc}$ has a substantially longer half-life (61d) than its most stable state of $\ce{^{95}Tc}$ (20h). Several alternative sources gave the same numbers.

That seems quite peculiar to me. Is it just a general thing that I shouldn't count on the most stable state of an isotope having the longest half-life, or is there some quirkiness there (alternatively, an inaccuracy that got replicated in a bunch of places)?