No, not that I know of. I just moved in a couple months ago. The ceiling started to crack. I do have 3 wet spots though out the apartment though. Maintnace guy said they were dry spots. https://m.flickr.com/#/photos/[email protected]/25909316250/ click left for more pictures of the apartment. (50 pics)
It does look like mold, as mentioned before if its just a small area its ok, just keep an eye on it. If possible spray it lightly with a strong bleach solution to neutralize it.
Yes it's mold. You can see the ceiling has been patched before. My guess is they had a leak, fixed it, then repaired the ceiling without replacing the Sheetrock.
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