Same problem in 64 bit ubuntu 9.10 server with native 10.0 r32 flash alpha driver. Youtube works just fine. actually it works GREAT (which is a first, because youtube streaming sucks. it only cost google billions of dollars to be useless)at any rate, youtube should shame hulu into being better. I was so happy when iinstalled the native 64 bit driver, it took a bit of work,. everything was just fine and working, even hulu. then i restarted the machine and got the error everyone is getting. so apparently i had fooled the browser in memory long enough to get away with using the 64 bit driver, and when i restarted is when i got the message.did notice that the video was much smoother in hulu and that the 'flashing' choppy video in commercials was not happening anymore, so it seems that was a legacy of nspluginwrapper for the 32 bit version. hope that helps! i may have to switch back to it though because this is not working and hulu seems slow to fix things.

I get this in fedora core 12 32 bit flash 10.0.45.2 firefox 3.5.4 and on core 8 64 bit flash 10.0.42.34 firefox 3.5.2. I have no problem on win2k flash 10.0.45.2 ff 3.6

Ubuntu 9.10 64 bit
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2) Gecko/20100301 Ubuntu/9.10 (karmic) Firefox/3.6
flash 10.0.r45 64 bitI get an error saying
"We're sorry but we're unable to stream videos to your system. This may be due to an Adobe software limitation on 64-bit Linux systems"Hulu is the only site that does not work.I guess that error means they are aware of the problem, but is it going to be fixed at all?

i am having the exact same issue using the latest 64 bit flash drivers. this is a problem, because, when I use the 32 bit drivers, i have all kinds of problems, for example, flash applets will not respond to mouse clicks. but 64 bit works perfectly. except on hulu. hulu i am upset.