Inconceivable!
OK, it happens, but it's pretty rare.
This happens when the traffic on your site spikes (normally a very positive thing) but it sometimes means that our code (usually johnny on the spot) simply couldn't load fast enough, something on your site could be preventing our code from loading.
In either case, we're on it. Submit a ticket or email us at support@Datacrushers.com and we'll share it with our super duper special safeguarded solution.