I am having the same issue mentioned by rawarren. This process WmiPrvSE.exe is using a high amount of CPU resources, as you can see in this pic: hxxp://imageshack.com/a/img673/9367/OzJ0um.png.
When I stop EraAgentSvc service from services folder, the WmiPrvSE stops this high consumption. I have left my PC connected all day and night because i thought it might be an unfinished task or something, but it is still running at this level.
Here's my Process Monitor file (CSV), which seems this WmiPrvSE process is reading a bunch of registry entries, I wonder if it got stuck in an infinite loop or something?
My PC config is: Windows 8.1 Pro 64 bits // 8 GB RAM // Intel Core i7 // ESET Remote Administrator Agent x64 as well. Thanks for any help.