I have a customer with a 5550, has worked fine up until last week. This is the issue: When sending a single fax to multiple recipients, It will "maybe" send the first one, and then the other two say "waiting" for a long time. have to cancel those out and do them separately. Normally it sends one then the next and so on..........I have upgraded the firmware to the latest version. It works if she does one recipient, even multiple pages....thoughts??