Save & Publish Button Disabled. Can not save post

Hi,

I am having a peculiar problem on my (technoxy.com).

I can save first draft of post.

But if I start editing draft, after sometime (2-3 minutes) publish and save button gets disabled.

Due to this I cannot save my post.

I have copy the post and reopen post for editing and copy and save immediately. This works fine.

I have changed themes and disabled plugins. But problem still persist.

I have checked other threads on forum but could not find any solution.

Only thing left not is to change web host.