As you guys know the current updates fixes some stuff, but brings some other weird stuff.
So I wouldn't try them unless necessary and keep it at vanilla version, till they get their act together.
^ Kanon
You bought the PS3 version, right? It's probably the one with the most lag problems right now.
Bethesda's
1.2 update was aimed at fixing PS3 lagging. So that might help. 1.3 is aimed at PC, so that won't make much of a difference.
I think you should at least try other things first though, like loading an earlier save at least to see if those still work. And search the net on how other gamers are handling it.
^Paraspam
That's happened to me once only. Returned normal when I reloaded the nearest auto-save.
If you have any mods, try temporarily removing them to see if it helps. And the 1.3 update might fix it...
Or you could try the
4GB mod if you have over 2GB (won't help much if your problem is a game bug though).
Course, check the net to see if others have the same problem. If you still have problems, you might have to not enter that room ever...

Since the game has a lot of bugs, it just took time till gamers here would start getting problems too.
Hope Bethesda at least fixes the biggest game-stopping ones soon, like lagging and game crashing.