Please note that in Russia we have the largest year's festive days from 31 December (evening) till 10 January approx (New Year plus the Orthodox Christmas). So there is 99,99% probability that the developers won't be available at all here on the forums and mailing lists. So please be patient and do not rely on their help as it usually happens the rest of the year
if unsure — do not update the system at all 
Happy New Year to all!
