Thanks Ken, that was it. I've updated to R version 2.11.0 Under development (unstable) (2010-02-18 r51149) x86_64-apple-darwin9.8.0 and everything looks fine now. Thanks too to Simon for sorting this out! Roger -- View this message in context: http://n4.nabble.com/lty-dots-pdf-issue-tp1561703p1561864.html Sent from the R help mailing list archive at Nabble.com.