ID3 vTOPE NPRTCOM TALB Day to DayTIT2 2 Credibility of Witness in Terror Trial Under FireTCOP 2006TRCK 6TCON COMM nprComment Two men from the Northern California mountain town of Lodi are on trial for terrorism-related charges -- but the government's key witness is now having a credibility problem. Naseem Kahn testified he saw three top al-Qaida figures in Lodi in the late 1990s, but now that claim is being met with skepticism. Madeleine Brand speaks with Los Angeles Times reporter Rone Tempest, covering the trial in Sacramento.TPE1 NPRTYER 2006 P , j'+( ( <0Pa^0@1