1) Starting with version 1.5.6 LyX does not pick up the OS language
anymore, but always uses the English UI.
Question: Is that the case for everybody or just a few users? (I
cannot test since I am on an English OS X.)
Since I also use an English OS X, I can't test this issue either.
2) _Some users_ experience fatal drawing problems (LyX unusable &
crashes) with LyX >= 1.5.5 (and maybe related with the update of OS
X to version 10.5.3).
I haven't experienced fatal drawing problems with any of the three
binaries provided for testing. I couldn't detect any other issues
either with the quick testing I
have carried out.
Thank you very much for supporting the MAC version of LyX. Let me
know, if I can help you further.
George