Do you have issues in comment button in Buddypress activity page? When clicking the comment button the page keeps on reloading the whole page? And you are using The7 WordPress themes? The code below will show you how to fix the Buddypress comment button issue using The7 WordPress themes?
add_action( 'wp_print_scripts', 'my_deregister_javascript', 100 );
function my_deregister_javascript() {
global $bp;
if ( $bp->current_component == 'activity' ) {
wp_deregister_script( 'dt-main' );
}
}