Tried the same test as the topic head, but using RC1
The upper right count (URC) and lower left count (LLC) continued to change for quite a long time; LLC always lagged behind URC.
Time elapsed: about 1 hour, 5 minutes: the URC vanished -- it was about 110000, while LLC was 85567.
Time elapsed: about 1 hour, 25 minutes: LLC was 87318; stayed at this number.
Time elapsed: about 1 hour 40 minutes: FF doing little or nothing per Task mgr. Clicked on a line -- CPU usage went up, nothing else happened -- chose select all, cpu usage went up some more -- all three PT windows became unresponsive --CPU usage about 40% of each CPU -- let it loop overnight.
Time elapsed: about 9 hours, 45 minutes: CPU usage still the same; the three PT windows were just frames filled with white, still unresponsive; killed jv16pt with Task mgr.