I ran into these right off the bat. Was using Firefox and immediately switched to Chrome and haven't had the issues in that browser. Could just be some plugins we have in common.
I also saw this issue today, after I picked up the 87U this morning at Frys.
I was running along pretty smoothly most of the day turning on various features. The very last thing I did was adjust the "Highest-High-Medium, etc" designations for the devices on the Adaptive QOS Bandwidth Monitor...