Level 9 bug

[Entharion]

I bet there's been a lot of posts like these, but I can't find them right away, so I'm just going to ask the question...

In the steam release of Penumbra requiem I get to level 9(I think) and I spawn with a blue metallic orb in front of me emmitting sparks, it is at this point that the game nearly freezes (0 fps) and my only option is to close the game.

What do I do about this? I've updated drivers, changed settings in-game changed launch options and pretty much tried every patch I could find.

Specs:
Latest version of penumbra requiem from steam.
OS: Windows 7 build 7100 (RC)
CPU: Intel Q6600 2.4ghz x4
RAM: PQI 4x1gb
GFX: Nvidia 9800GTX+
MOBO: Asus Striker Extreme

On a sidenote: the other games/levels worked fine, and I attached a screenshot of the stuck frame(on lowest details).

[Entharion]

I fixed it by loading an older save, it worked then