Animation hanging

Hi ,
This file was earlier working (1-180) frames, containing only text ROT. I later tried to add till 220 frames. But deleted though. Now the animation hangs in the Object Mode also. Can some one help. I am posting the blend file.

vizdiz.blend (1.36 MB)

Photon

I opened in 2.6 it crashed
I opened in 2.72 and it ran slow with hesitation.
looking in the graph editor I saw location key frames that do nothing so i removed them just to clean up.
Then it played 24 frames per second fps. I do not know why it started working it just did. I also moved all the fonts to their own layer just to inspect one at a time.

You have collision physics activated on your text objects for some reason; if you deactivate collision it runs OK.

Thanks Alan and Kazinger. I removed the Loc frames and deactivated the collision physics. it worked … Appreciate your help