Holy S$%T, I just lost 1st gear in my X 2 weeks ago too.... I went to the dealer the next day, and after a "diagnostic" for 85 dollars mind u, they proceeded to tell me that they have never seem anything like this and how they cant explain it, intially i was hoping it was a clutch problem....unfourtunately not the case...anyway ive been driving "normally" since starting off in second gear, seeing how im not going to fork over 3000+ dollars for a transmission job.....U think we might have a defect in Nissan trans here? nobody ive tallked to has ever seen anything like it...