+1  A: 

This is impossible to say without any code to review. Do you happen to use the action stack a lot? If so, this is likely the culprit as it goes through the entire dispatch for each call.

Your best bet: use a XDebug or Zend Debugger to find the bottleneck in your application.

Gordon
Layout is lagging. Action views not. I'll put my layout code in question. Wait a while pls.
Misiek
I can't use any of this 2 because of some business issues.
Misiek
@Misiek cant see anything wrong with the layout. Also, your page loaded in less than a second for me. If you cannot use a profiler, it will be difficult to find the bottleneck. Cant you help you with that. Sorry.
Gordon
Today it's working faster but something is wrong. It takes to much time to load normal action with view and layout. When I'm only echo'ing JSON data in AJAX controller everything it's ok and the JSON data are showing after 0.1-0.2s
Misiek