Regular homepage loose some modules, when activating the plugin

I have installed the Mobile Joomla plugin and it works nice on iPhone and Smartphone templates.
But the regular homepage looses some modules when the plugin is activated.
All I have done is installed the plugin.
Look at the attachment, to see what happens when I activate the pluging.

Any solutions?

What Joomla version do you use?
Do you use 3rdparty extensions that may affect displaying of modules?

I use Joomla 2.5.8
The only 3rdparty extension I use is DJ Image slider.
I have tried to deactivate this, but this doesn`t help

Actually, MJ doesn't affect desktop template at all (it has functionality to disable plugins and modules, but by default all of them are enabled).
Do you use progressive caching in Joomla? If yes, maybe it was caching issue (most likely Joomla clears modules cache after installing new extensions).

Now it works, thanks