got it two days ago and have been working my way through it. I like the tiles but so far I've stumbled acros two changes I really don't like. 1) All my preexisting Excel documents come up in "protected" mode and I can't get rid of this. I've been copying and pasting them into new documents as needed. They work fine. 2) In Edge, maintaining "favorites" has changed in that one cannot move a link (or folder) up a level. I noticed this when I created a new folder (which winds up a the bottom) to a higher position. I must have hovered another folder too long and it dropped it in that folder. Now, in IE10 I could simply click and drag it up and out of that folder up the tree. Edge does not (obviously) allow moving out of the current folder. so, the jury is still out but so far I'm not pleased with these new features and am trying to find workaround for these. I wonder what other surprises Cortina has for me.