Hi there,
By the lack of response it would seem that no-one has experienced this yet. If you haven't done so already, I believe your best option in this case is to contact our support department and start a ticket on this.
In addition to the information you've already provided, make sure you have the following ready for them.
- PowerFuse version you are using (x.x.x.x) see this in the lower hand corner of the console
- What browser/version are you using, I presume IE.
- It does sound like a randomly appearing issue (hate those

. Have you discovered any way of triggering the behavior since then?
- A tracefile is also a good thing to keep handy.
Hope this helps,