well, for sky textures, i'm not in a position to comment, as I run flywithlua and a script posted in another thread I think, that modifies the drefs. as for problems, it seems they fixed a few and made others more prominent.. One thing i have seen which seems to help with some folks is deleting the entire contents of the preferences folder ( /resources/preferences ). I'm getting ready to try it myself just to see if i can break my 10 FPS barrier by doing that..