I have experimented a variety of configurations of my OS, driver, and software, but with the same results: with 16GB of memory in my system, flash video (via Hulu, YouTube, and others) freezes, showing a still image of the last displayed frame while continuing to play the audio.
When I take the system down to 12GB, the freezes no longer occur. 8GB and 4GB are cool too.
Memory tests are good; I actually rotated all of the memory in each of the slots for good measure.
One other odd thing: Black and white movies, such as Akira Kurosawa's Seven Samurai via Hulu, didn't seem to freeze at all (I wasn't able to watch the entire movie, but over an hour in it still hadn't frozen).
Any insight would be much appreciated!
# pciconf -lv
vgapci0@pci0:1:0:0: class=0x030000 card=0x02ef1028 chip=0x061f10de rev=0xa2 hdr=0x00
vendor = 'nVidia Corporation'
device = 'G92 [Quadro FX 3800M]'
class = display
subclass = VGA
Latest software configuration:
FreeBSD m6500.local 9.0-BETA1 FreeBSD 9.0-BETA1 #0 r224414: Tue Jul 26 02:22:28 CDT 2011 firstname.lastname@example.org