lot of issues for an expensive machine.  1st the small filter does not seem to fit into the portafilter or brew head.  It's so hard to turn into place when I use the small filter but works fine with the large 2 serving size.   My biggest problem is that the milk container pops away from the machine when I start a pre-programmed mode.   I have to constantly push it back into place, that's really annoying and must be a malfunction.