Don't blame Pulseaudio for Ubuntu's goof with it. I know people still had some issues, but with Fedora it really did work very much better then Ubuntu.
The PA in Hardy was, as far as I can tell, a victim of bad QA.
And Adobe Flash does crash out my browser quite often. Most of the time when I close out a window which I just watched a video, which follows that race condition described in the above article. This hasn't anything to do with PA, since you know, I am not actually running it.
I am sure you have other good reasons, but switching to Windows to fix Youtube is a bit drastic when it could of been solved by turning off PA or/and installing some other flash player. :)