Quote Originally Posted by cfortune View Post
For those who reserved their copy but don't have the upgrade available, you can just go download it from Microsoft if you don't want to wait.
Shoot, can't believe I didn't post the link; http://www.microsoft.com/en-us/softw...load/windows10

I haven't noticed any major issues. My systems are also not exhibiting any extra load, but I was using Microsoft Security Essentials ("Defender" for Win8 and higher) for antivirus on Windows 7.