I've just updated to NextGEN 1.2 because I found that with 1.0 it wasn't saving - or rather it stripped out - language tags and second language data in image descritions and titles.
I now find that this problem is cured (glory be !) but that my Gallery description and other data (like gallery thumbnail) does not save.
On installation of 1.2, I got a message about updating database for 1.2 - could this be the problem ?
I think it may have been happening before...