The problem is, that if you have a modal form opened in your application, the caption area is totally dead and can't be clicked to bring the application to front.
That only happens if skinmanager is active. This behaviour is a long lasting problem, not just the current version of Alphaskins.
To reproduce the misbehaviour just open the Alphaskin Demo and open a dialog like “OpenFile”. Put an other application in front of the Demo and try to bring the Demo to front. You can click anywhere in the whole window to do that but not the caption area of the main form. That's very annoying if you have many applications open and just see the caption of the application, you want to have in front.
If you disable skin, caption area works as expected.
Attached, you see a screenshot of what i mean.