Hi All, I upgraded to the Anniversary edition in early August. I had some problems but things were manageable. In the last 2 weeks my Dell Precision M6800 with 32mb of RAM and 2 480 gb SSD hard drives was experiencing 100% CPU utilization to the point I couldn't even bring up Task Manager and had to do a Power shutdown. I cancelled a day of training and worked with a Dell technician for 6 hours and we turned off a whole bunch of stuff like Cortana etc. We finally got CPU utilization down to less than 50% most of the time. A symptom that has been there is (not responding) which I get. I have both Office 365 running Web Applications and Microsoft 2010 and some 2013 installed apps. Reading other forums, it seems that it is the Web based applications which can save data to web or local that are root problem. The Anniversary Update has issues for people with Web Based Applications. Example - I had started a word document in Office 365, I went to save to a local disk and need to create a new folder, it will hang for 30 seconds or longer to create the folder and in the dialog, I get (not responding) until the folder is created and then I save it. Sometimes this happens and sometimes not. Also, in general Wireless performance has been 30 to 50% less than Ethernet since upgrading to Windows 10. The Dell technician tweaked my Intel wireless device and got it working 100%. Then Windows 10 did an update and now my Wireless throughput is down.