Environment: Windows 8.1, all patches. I was on 1.1.82 and upgraded to 1.2.73 1.2.73 showed high CPU load of 12 - 15% and did not recognize all files. To make sure, I restored the system, uninstalled 1.1.82, (delete settings) and deleted the .synchID file as well. The following fresh 1.2.73 install showed the same symptoms: High CPU-load, recognizing only 2395 file out of 11.485. No other application was open. Uninstalled 1.2.73, deleted .synchID, installed 1.1.82, recognizing 11.485 files and everything was OK! By the way, all 1.2.x versions showed high CPU-load here. Any ideas?