Hi all,
I managed to make the display of Arabic acceptable using ltr and rtl marks and other workarounds. So for the time being Arabic is ok. I already uploaded Arabic translation.

On Tue, Nov 23, 2010 at 11:16 AM, Fabien Ch?reau
> OK.. We just froze string translation. Changing this means loosing the
> translation. Should we do the change anyway?

Thanks Fabien, I believe the issue is with mixed direction text handling, rather than translation itself. so freezing the string translation is ok.
Bogdan Marinov wrote:
> See this Blueprint and this branch:
https://blueprints.launchpad.net/stellarium/+spec/right-to-left
https://code.launchpad.net/~daggerstab/stellarium/right-to-left

> At the moment, it doesn't look very good, but it's something.

Thanks Bogdan, In the blueprint, I believe you can keep celestial objects labels the same as ltr text. I think it is ok to have the labels to the left of the object. For the branch, It's hard for me to follow the code.

And thanks to Leonid Fro for the link discussing the subject>

Regards
Khalid AlAjaji