This is pretty scary, if you go to your Google Maps business listing, any photos you may have uploaded seem to have been completely removed! This even happened on my business listing where I had a ton of photos uploaded by yours truly and they are all gone.
Here is the backend where it shows I have zero photos uploaded:
Here is a picture only showing pictures from the web and not pictures I've uploaded:
Vanessa from the Google Maps team said they are looking into the bug. She said:
We're investigating to see if there's a bug going on. Keep posting your examples -- links to Place pages are most helpful.
To submit your issue, go to the Google Places Help forum and give Vanessa your URL.
Forum discussion at Google Places Help.