If nlm is called with a function in the Math group it causes a segmentation violation in DispatchGroup. For example R> nlm( sin, -0.5, print.level = 2 ) Process R segmentation fault at Thu Apr 29 17:10:15 1999 --please do not edit the information below-- Version: platform = i686-unknown-linux arch = i686 os = linux system = i686, linux status = Patched (unreleased snapshot) status.rev = 0 major = 0 minor = 64.0 year = 1999 month = April day = 29 language = R Search Path: .GlobalEnv, Autoloads, package:base -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._