Dust marks on the 'inside' of display

I have had my 24" iMac for just under a year. 3 months ago, I noticed strange dust-like marks on the inside of my display. They are definitely on the inside because i tried cleaning the display and they did not go away.
This suggests that the iMac is not air-tight, which is not really a good sign. Now I am left with these annoying marks.
It is not the end of the world - but disappointing seeing as it is not even a year old.
Can anyone suggest what I should do to fix this problem? Any help appreciated.
Many thanks.

I would do it myself since it's me, as I don't trust Apple technicians to do any sort of cleaning. Everytime I took an Apple product in to the Apple Store for repairs for example, they always wind up back dirty, tons of scratches, fingerprints, etc.
Just don't use a toilet plunger or high adhesive tape, go with one or two small sized suction cups, a pair of latex gloves, and some preferably brand new microfiber cloths. Some compressed air would be a good idea as well.
Course if you don't feel comfortable about taking the glass screen apart, I would hand it over Apple. Just tell them you don't want any fingerprints or more dust in there than there already is.
Message was edited by: Nong Shin

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Dust marks on the 'inside' of display

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