Motorola said it had <A HREF="http://news.yahoo.com/s/nm/20060315/tc_nm/china_motorola_dc">solved a technical glitch</A> in its hot-selling Razr cell phone that had stopped shipments for three to four days. The problem came from a second-source firm that had only recently started to supply Motorola with components for the ultra slim Razr. The problem was in phones shipped to just two carriers in the United States -- Cingular Wireless and T-Mobile USA -- and most of the problem phones had been caught in the inventory of those two firms.