Hi, I am using R-1.8.1.alpha with affy_1.4.1 in Unix system, and now experiencing "Segmentation fault" whenever I use normalize.quantiles() on a 34000x6 matrix. R gave "Segmentation fault", halted my codes and exited from R without any other message. Affy was re-installed, and the same situation happens again. No other messages were given. Greatly appreciate any advice, and as to how I can possibly proceed on. Thank you and good day, Melinda