($\sim$2$\times$10$^{-4}$ M$_{\sun}$ yr$^{-1}$). Application of an extinction correction to the UV luminosity results in a star-formation rate of $<$1 M$_{\sun}$ yr$^{-1}$. In contrast, its true star-formation rate as derived from the mid-infrared fits is $\sim$80-90 M$_{\sun}$ yr$^{-1}$. The fact that JD2 is a compact near-infrared source with a scale length of $\sim$0.3$\arcsec$, combined with the large ratio of infrared to ultraviolet star-formation rate estimates, strongly suggests that JD2 is being powered by a compact, optically-thick starburst in its nucleus.

There is a caveat. If we use the @BC03 models to solve for an independent redshift from the optical/near-infrared photometry presented in this paper, we continue to get a high redshift minimum at $z=7.2$ which has a reduced $\chi^{2}$ of 1.05 compared to the reduced $\chi^{2}$ values of 1.9 and 2.4 at $z=2.4$ and $z=1.7$ respectively. Thus, optical/near-infrared photometric redshifts continue to favor the high redshift hypothesis, while mid-infrared photometric redshifts favor the lower redshift hypothesis. We favor the mid-infrared photometric redshifts derived here since optical photometric redshifts for dusty galaxies have been shown to have a large scatter based on a comparison between spectroscopic and photometric redshifts for 24[$\mu$m]{} detected sources in GOODS-N [@Chary:06].

A comparison of the properties of 