Tekkit crashes when I join servers. (1.1.7)

[lolo485]

Title: Tekkit crashes when I join servers. (1.1.7)

Version: 1_0_3

OS: Microsoft Windows 7 Home Premium, Version 6.1.7601 Service Pack 1 Build 7601

Java Version: Newest version, I couldn't get the version number.

Description of Problem:

When I joined a server my client started acting funny. I was falling through blocks and into the void. When I rejoined I was back at spawn. I then crashed, and no error messages came up.

Error Messages:

Error Log:

[lolo485]

Sorry, I forget to add that just before each time I crashed Tekkit would start burning through my CPU up to 95% before closing. Kinda important to note, I suppose.