Thank you, rafaelluik! As I understang, the problem is in the program webget which had been installed out of my wish. However this program obviously is very resistent because it cannot be removed from Control Pannel: the process is stoping on the half way and... nothing more. I tried in Safe Mode - the same result. According to some advices I installed the program revounstaller but webget does not appear in the list that the program exposes! What to do?