When I run DOSBOX, before I've mounted and run a program, it's fine; I can alt-tab around, move the mouse outside the DOSBOX command window, et cetera. When I start the game, and it's loading, it's still fine. However, as soon as I click in the game window, focus is -completely- locked to that window; I cannot alt-tab at all, nor move the mouse outside the game window. If I fullscreen and then restore, I get the system mouse again and can resume focus-switching. However, now the keyboard will not work! Both of these behaviours are constant even after I've exited the game.

A cursory search of the boards didn't turn up anything on this; is this a known issue? What's goin' on with it?