I just got my Arduino 101 and tested some of the examples. Blink, SerialCommunication and BLE Sketches worked all fine.
Then I wanted to try the curieIMU sketches, but when running the arduino hangs just forever after CurieIMU.begin() was called. I tried to switch on the onboard led after the command or sending something over serial. Nothing happens even after long times of waiting. Serial disconnects sometime then.
I installed Arduino IDE from the Download page and followed the instructions for getting started with the 101. My version is 1.6.12. I tested different usb cables, usb ports (2.0/3.0) and different operating systems. The arduino is just new, it can be broken yet. I unpacked it and only handled it carefully on my dry and clean wooden table.
Is there something I forgot?