Mostly for the record, it happens also on Mandrake 9.1 with R 1.8.1 installed from rpm.
>chisq.test(matrix(c(0, 1, 1, 12556), 2, 2), simulate.p.value=TRUE) Pearson's Chi-squared test with simulated p-value (based on 2000 replicates) data: matrix(c(0, 1, 1, 12556), 2, 2) X-squared = 1e-04, df = NA, p-value = 5e-04 Federico Calboli -- ================================= Federico C. F. Calboli PLEASE NOTE NEW ADDRESS Dipartimento di Biologia Via Selmi 3 40126 Bologna Italy tel (+39) 051 209 4187 fax (+39) 051 251 208 f.calboli at ucl.ac.uk ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help