I installed Win 8.1 Update 1 ISO x64 on Thursday/Friday. I have noticed 2 problems which I have rarely noticed in win 7 and never in 8 and 8.1 RTM 1. On restart or cold boot, sometimes it can take a while before the desktop icons (eg recycle bin or program icons such as cleaner, picasa, etc) become responsive. It seems like the mouse has stopped working and clicking the icon does nothing. This does not happen on program icons placed on start screen or on C:/users/my name. 2. On the same restart or cold boot, when I click on explorer and then computer, it takes a while for all partitions to load up and I simply get a blank screen and a green progress window on the top. To be fair, this does happen sometimes even on 8 and 8.1 rtm, but happens with far more frequency on recent win 8.1 update 1. Have I done something wrong. It is the same hardware and same drivers as were on win 8.1 rtm.