Do you have a crash report? Preferably one with the name of the crashing module? (to tell us if it's a driver, the OS, or Flash Player)
I recreated the crash once again, but the directions on the site for getting the log file did not work.
I even tried looking in my temp folder by myself and did not find anything related to *.mdmp or log files.
Oh, well. A crash report would have helped narrow down the cause.
Turns out sites like Stickam are working now, but Youtube is still not working for recording from Webcam.
So now it seems to be a problem between Youtube and Shockwave/Flash Player