What's wrong with closing applications on Windows Mobile? [closed]
Solution 1:
From the Windows Mobile team's blog:
The Emperor Has No Close
In summary of the above article, Windows Mobile's base philosophy is that users on a mobile platform shouldn't be expected to have to manage the memory. So it will close applications to free memory when needed. The X button was designed as a "I've finished with this" button, but the choice of X obviously implies close.