I just created an interior with some scaled-up (large) statics. Some of them disappeared unfortunately.. I thought the big-statics bug was solved, but apparently not?

The other thing I noticed was that several large objects are either mal-placed or strangely appearing out of nowhere in-game. Here's a photo of it: http://i197.photobucket.com/albums/aa253/GrandDukeAdense/Skrmklipp-1.jpg

As you can see, the in-game view is totally different from the CK-view... Why is this happening?

The large statics bug that was fixed only affected exteriors in the worldspace. I don't think anyone has ever reported the problem using a large scale interior.

That looks like you're far enough away for that to have gone to LOD rendering. Does the static you're using there have an LOD mesh?

No they don't. And they're still there when I go closer. And it has collision so I can't move through it.
I placed a lot of those meshes in that cave, but they all sort of seem like they have gotten moved to random locations. Or rather, clumped together at the same location...

Strange.. I've had similar problems several before with several different esp-files, with big meshes disappearing in interior cells.. but I've never seen the objects get mal-placed before.. at least not to this extent.
This really bugs me, as I need the cavern to be big. And everytime I create a really big cave, something along the lines of this happens (although this is the worst case so far)

I've definitely never see things end up scrambled the way you have so maybe this is a different large-statics bug that affects interiors? You are using CK 1.6.89, yes? (not everyone willingly updated)

Yep, I use 1.6.89.
I hope it's solvable in some way..