Game Freezing/Crashing

[Ebbafan]

Im on Windows 64bit
I have tried to reinstall FTB and tried playing on my save
I have the latest java


So whenever i join my world I get SUPER LAG I mean really SUPER LAG!
I can move but nothing gets saved and i cant open chests etc.
I cant even post the stuff in the console to pastebin even when the client is closed any help?
The console is just frozen when i click post to pastebin it doesnt copy the code nor opening the page!
One thing I see in the console is this:

2013-05-03 14:53:41 [INFO] [STDOUT] Wrong location! EntityBrainyZombie[´Angry Zombie´/1449, I=´Abbes World´, x=175.70, y=34.00, z=546.70]

IDK wtf happend but i started to play and cant do shit. Please help me I really want to continue with my world.
I give the client 6gb RAM
And my pc is built for games so thats not the problem!

 

[Ashzification]

Please follow these steps exactly: http://desk.feed-the-beast.com/index.php?/Knowledgebase/Article/View/9/0/basic-troubleshooting
This is to rule out any issues with your client setup.

If you continue to have trouble, please post your complete client-side console log in debug-mode to pastebin.com and link your paste URL here.
To find your logs: http://desk.feed-the-beast.com/inde...29/1/what-log-do-you-need-where-can-i-find-it