Maximum login connections: 421

[Dan]

I am getting:

WARNING: SENT: 421 Maximum login limit has been reached.

I have set the connection configuration as follows:

ConnectionConfigFactory connectionConfigFactory = new
ConnectionConfigFactory();
connectionConfigFactory.setMaxLogins(32);

The thing is there aren't even close to 32 people logged in right now, are
there known bugs with having hanging connections etc. that could cause this?

Any hints to help debug this in the future?

Thanks,

Dan