Everything else works except the voice controls, worked for like a week now NADA???? help???

I am having a similar problem, the voice commands worked great and know when i say AC/DC it plays Ace Frehley, i say Slipknot and it plays something else. i have not been able to figure out how to correct this either.

Last time this happened to me it was after I had updated the iPod in my car with new music. Had to re-enable the VR cataloging mode under settings, let it re-catalog what was on the iPod and then disabled the VR catalog again.