This is a bug about interaction between ts1enc and siunitx, thus up-upstream. Please report to any of the responsible authors. Furthermore, as stated in the bug report, I don't consider these bugs. Closing it. Norbert -- PREINING Norbert http://www.preining.info Accelia Inc. + JAIST + TeX Live + Debian Developer GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13