[XeTeX] Updating questions

[Nathan Camillo Sidoli]

Hello All,

I finally upgraded to TexLive 2012. I'm getting a few warnings, but I'm 
not sure if they are serious. I can't tell if there is any change in the 
final product.

The first is:

(/usr/local/texlive/2012/texmf-dist/tex/latex/base/fixltx2e.sty)
*************************************************
* LaTeX warning: "xparse/redefine-command"
*
* Redefining document command \oldstylenums with arg. spec. 'm' on line 107.
*************************************************
) (/usr/local/texlive/2012/texmf-dist/tex/latex/fontspec/fontspec-xetex.sty

The second is:

** WARNING ** 4 memory objects still allocated
You may want to report this to tex-k at tug.org


The third, which I only get when I use an Arabic font, is:

** WARNING ** Invalid CMap mapping entry. (ignored)

If anyone has any insights or suggestions, I would be grateful.

Best,

Nathan