Spawnchunks look weird [CC 1.48]

Hi,
i installed Computercraft 1.48 on my Server (Vanilla + Forge #467) in combination with Redpower 2 pre 6.
As soon as i put the Computercraft.zip in my servers /mods folder and restart it, my spawchunks look strange.
Blocks are floating in the air and it seems as if this chunks (and thats the only chunks where it happens) were moved downwards 10 blocks or so.
Picture of the error:
http://picpaste.com/...r-DhpEIuvk.jpeg

We don't do anything which could remotely cause this. Tried updating your forge?

No i did not update my forge yet because the webiste seems to be down atm.
I also did not want to blame Computercraft.
I just thought it could have sth to do with CC because the problem appeard after installing it.

http://files.minecraftforge.net/ seems to be up for me.

The Forge Update to #473 helped.
Thank you.
Sorry for this unnessessary bug report.
Some more patience before reporting would have been good ^_^/>