"It was a Chinese firm, actually, but pretty much as you say. Hummer as a company/division/corporate-entity is done and gone. I suppose GM still holds any ownership of Trademarks and copyrighted materials, but that's probably just a legal…"
There are known issues with IE9 and NING. I remember there were a lot of issues with IE7 and NING also. I lean towards it being less of a NING thing and more of a MS putting a product out that should still be in beta and using the public as lab mice to find all the glitches with it. NING is aware.