[OS X TeX] TeX Live Utility: strange error message

[Franck Pastor]

Hello list,

Each time I make use of TeX Live Utility, it shows this error message  
at the end of the process (even when it seems to work well):

2009-12-28 09:27:06 +0100 Notice -[TLMOperation main][189]	Standard  
error from `/usr/texbin/tlmgr --machine-readable --repository http://archive.cs.uu.nl/mirror/CTAN/systems/texlive/tlnet 
  update --list`
tlmgr: package repository http://archive.cs.uu.nl/mirror/CTAN/systems/texlive/tlnet

If I use the X11 GUI of the TeX Live Manager, I do not get any message  
of that kind.

Any idea of what happens?

Thanks in advance,

Franck Pastor