I keep crashing this happens when i play for a while or when i enter the world

[KIKO9989]

Launcher Version: 1.0.1.3

Operating System: windows 7 -64 bit

Java Version: java 7 64 bit

Antivirus Program: i cant play for a certain time because i keep crashing. SOmetimes i cant even join my world. I already lost 5 survival worlds and this is starting to annoy me.

Description of Problem:

i cant play for a certain time because i keep crashing. SOmetimes i cant even join my world. I already lost 5 survival worlds and this is starting to annoy me.

Error Messages:

Error Log:

[KIKO9989]

sorry for double post but it wouldnt let me upload the error log

here it goes the pastebin

http://pastebin.com/PvZQGw69