Animas is experiencing "extremely high call volumes" this morning so I figured I would see if anyone here had an idea before I braved the annoying hold elevator music. My pump has occluded during the night for 4 of the past 5 nights. Up until then, I had never had an occlusion before. All four times, I have changed my site and the tubing, the sites never appeared to be blocked. I have also tried using different sites with each change (inset, inset 30, and contact detach). I have even tried replacing the cartridge cap. I am beyond frustrated at this point. I downloaded my pump this morning to see how long I was without insulin each time, and they were all over 3 hours before the alarm got loud enough to hear under the covers. Has this happened to anyone else? Does it sound like a problem with the pump?