It appears to only be happening during "View Live".
I never run IE but some odd situations had me watching yesterdays game on it. It kept hanging at 7:52 of the 1st - which upon watching the replay was the first timeout called by my opponent (and of the game). I eventually got past it, I forget how, and it was hanging somewhere else in the first and I gave up on it. Unfortunately, I cannot recall when the second hangup happened, but I know it didn't involve a timeout as that earlier one was the only one taken during the first quarter.
I just watched the replay of the entire first quarter with no hangs at all.
My Flash version that link reported is WIN 10,0,22,87
And I'm running IE version 8.0.6001.18702 on XP