After selling my 770 tablet awhile back, I finally decided to take the plunge on a n810 (better late than never!) Even though the regular n810's are cheap right now, I decided I really liked the look of the WiMax edition and found an open box unit for a decent price.

It came in mint shape with only one issue--there is a small amount of oil or lubricant that is appearing on the back of flipped up screen. I've wiped it off a few times but a little bit keeps getting tracked up from the inside when I reopen it. My buddy's new n810 doesn't have this going on, so I wanted to see if this has happened to anyone else. Did I get a leaky n810, or did the previous owner just spill something inside the unit?