I have been having similar problems, last few days. I put in a new set change on Monday afternoon, all seemed okay, blood sugars normal that evening, next morning, slightly raised on 13.6, but came down gradually enough to eat. Yesterday morning, up to 17, did a correction, but was annoyed by the time it took to work, very slow, and had to put on a temp basal to get it anywhere close to normal. Today was the worse, went to bed on 8.5, awoke on 24.7, very high ketones, and now feeling very scared. I made the mistake of doing a correction but realised after, that this set wasn't working, so did a correction with my pen. It took over 3 hours to get it down to 11, so I could have breakfast. I checked my old site, only thing I can think is, it has been stinging every time I do a bolus, and I had it close to another site, which had a reaction to the cannula. I do not think the insulin was being absorbed properly, I find it really hard now finding places to put the inset's. I normally put it in my stomach, but am now using my sides. I have now lost confidence, and am not sure if the pump is for me anymore. I have got an appointment next week, to see the diabetic nurse, to discuss this. Pumps are great when they work, but they do fail sometimes, and I hate having the worry of not knowing what's happening with my blood sugar. Anyone else feel this way, or shall I just put it down to experience? :?