Selection of non-filled objects

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I have an object that has a stroke but no fill.  When I try to select an object below this object, though the non-filled area, it selects this top object instead.  I swear this wan't happening yesterday or any time before this.  Can anyone tell why this is happening?  Please?
Running CS6 on Mac OS 10.8.3
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Replay

It's because it's above everything else. To select deeper to objects below you need to press and hold (CTRL/CMD) and click down.