Fujifilm's FinePix Real 3D W3 
We've seen efforts from Panasonic (the HM-TA1), Samsung (the HMX-E10) and even a 3D shooter from Aiptek. And now, Kodak has come to the party with its and more »
Is our Panasonic digital camera ruined?
My guess is that this is a fault in the CCD sensor (the "film" in a digital camera). There were a rash of these problems in sensors produced by Sony in 2005 (see link below) with the common symptom of a horizontal line appearing on the image. Many companies were will to fix this fault for free.
You have (possibly) two options.
1. If you can gain access to the sensor (depending on the camera, you might be able to take off the lens to get access), you might use a lens blower to try to knock off any dust, etc that fell onto the sensor. It's possible (though unlikely) that this is your problem.
2. You can call Panasonic and tell them about the problem, highlighting that this is a sensor fault, and try to get them to spring for the repair. If they won't the cost of the repair is probably prohibitive (around $200 for Canon), so you'll end up tossing the camera.
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