My boot after install completed took 28 minutes.
And it didn't fix the issue. In fact it created more issues.
I'll do a full format later this evening.
Format/reinstall worked - got the 9860 build update.
Getting this error when trying to check for update" Failed to check for new preview build, please try again later. 0×800700EA". Please note I have installed Mediacenter using my Windows 8 key.