The browser doesn't show videos on Youtube
Youtube videos appear as a black box only in safari 5.0.3, since flash payer has been updated to 10.2. They work if I change the User Agent to Safari 4.0.3 using the Developer menu, but this is not permanent.
Flash Player 10.1 is no longer downloadable, so I don't know how to downgrade. User agent setting are not permanent, or I don't know how to set them fixed.
Maybe, it is a bug in YouTube embedding, because Flash sites like that from Adobe work. I am relativly sure that the new flash plugin is the problem, because I have to macbooks with OS X 10.6.6 and Safari 5.0.3. The only difference if the version of the flash plugin: 10.1 shows youtube videos, 10.2 not.
I'm not sure the flash version is the reason. ALso the working mac has been installed with OS X 10.6 from scratch, the not working has been updated from an 10.5.