Samsung 42" DLP Vertical Lines Problem

My 2 week old 42" Samsung DLP is exhibiting a problem: Regardless of
input source, I am seeing faint vertical lines about an inch apart
across the screen. They are most noticeable when viewing lighter
colors.

(Please do not advise me to have a tech look at it since it is under
warranty - I know to do that and am awaiting a callback from the shop.)

Has anyone ever seen this kind of thing on their sets?

.

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