I have not been able to locate a really high resolution image of the Smith Hydrogen Cloud, assuming that such a detailed image exists. However, even the image available does suggest that estimates that Smith Hydrogen Cloud will form stars in tens of millions of years could be to conservative. I am assuming that the bright leading edges of the cloud represent hot spots in the radio imaging of the cloud. Hot spots indicate the presence of energy, and it is quite possible that the nose of the field has entered an area of increased current flow in the magnetic field around our galaxy, and the hydrogen atoms within this current flow would represent disruption or disturbances in the magnetic field. A detailed examination of the radio frequency image might reveal the presence of vortexes in the gaseous cloud, and if such vortexes are present, that would be an indication that star formation is already underway. Once star formation begins the process is not slow, and does not take millions of years, for the magnetic vortex builds in strength as more atoms are pulled into the vortex requiring more energy in the vortex, for the atoms represent disturbances in the field. Those hot areas in the field certainly look interesting in low resolution, and I suspect that millions of years is a little to conservative an estimate for the beginning of star formation within this cloud.