A few times I have had the server showing more connections that actually exist. I guess that at some time recently, a database closed on a client but the server did not decrease the number of connections showing. Here is a screen shot of the Server Administration windows showing the discrepancy after closing Panorama on all the clients. I cannot tell you exactly when the discrepancy arose, but will try to catch it if it recurs.
If I now open the file with the wrong count, it increases by one on each window, so it still off by one. The discrepancy prevents me from uploading a new generation. Not sure if there are any other consequences.