as i recovered from my bounteous snack lunch, the daemon said:
The following information was provided by the package's contributor.
Name of contribution: libertine Author's name: Bob Tennent Package version: 5.3.0 (2013-09-02) Location on CTAN: fonts/libertine/ Summary description: Use of Linux Libertine and Biolinum fonts with LaTeX License type: ofl
Announcement text given by the package's contributor:
libertine.sty now defines a useosf command to facilitate switching to oldstyle figures after calling a math package (such as newtxmath with the libertine option) with lining figures.
Announcement required: Yes
thanks for the upload; i've installed the new version, and updated the catalogue repository.
Users may view the package catalogue entry at http://www.ctan.org/pkg/libertine or they may browse the package directory at http://mirror.ctan.org/fonts/libertine/
Robin Fairbairns
For the CTAN team