Giuseppe Ragusa <sigmakernel at yahoo.com> writes: > I have two machines a linux_amd64_x86 (gentoo_amd64) and a > linux_x86. You might want to try running valgrind on your code on the 32bit machine. This may turn up a silent coding error that is manifesting on the 64bit platform. I think there is a new R CMD check option to do valgrind. + seth