Flash 10.1 installs in Vista and XP but will not play some content

Question

I started this morning by thinking the problem I am experiencing with Flash Player 10.1 is a version of the problem discussed in this forum  under "Flash 10.1 not working in User account."  I now recognize that it is a different problem.
First, FP 10.1 (specifically v. 10.1.53.64) installs fine either in Vista Ultimate 64 (IE Active-X or FireFox Add-in--I use and work in an administrator account) or XP (multiboot machine).  I can confirm the installation at http://kb2.adobe.com/cps/155/tn_15507.html and the FLVs at http://www.acpmh.unimelb.edu.au/resources/resources-education.html play with no problem.
Some content, however, simply will not play.  I need badly to look at http://library.creativecow.net/articles/hansen_jaysen/growing/video-tutorial.php and it hangs and tells me I need Flash Player--both in IE and FF.  I have repeatedly uninstalled FP, rebooted, and reinstalled but that doesn't change anything.  Worse still, since I use Adobe Connect a lot, Connect hangs when I try to enter a meeting.  Exactly the same thing occurs on my laptop which runs Vista 64 Home.
I have tried everything I can think of and searched with every strategy that seems promising but I have found nothing on this problem.  Surely I can't be the only person experiencing this!. Does anyone have any idea what is going on and how to deal with this problem?
Thanks in advance!!!

Answer 1

I have exactly the same problem as the OP, on both my desktop (Windows XP) and my laptop (Windows Vista).  Both PCs have the latest versions of Chrome, Firefox, Opera and IE but no browser on either PC will display video content from the BBC website bbc.co.uk/news any more.  Before the Flash Player 10.1 upgrade about 10 days ago everything worked fine.
It still works on YouTube videos and the OP's http://www.acpmh.unimelb.edu.au/resources/resources-education.html but it won't play http://library.creativecow.net/articles/hansen_jaysen/growing/video-tutorial.php that the OP wants to view.
All that happens is that the first static frame is shown, but the 'telephone dial' animated icon (circle of white dots) just keeps going around forever and everything stays frozen and there's no sound.  Except when I've uninstalled Flash, there is no error message.  I've tried going back to a System Restore point but it didn't work; perhaps it's not far back enough.
http://www.adobe.com/software/flash/about/ confirms that I have the latest Flash version 10.1.53.64, it says it's successfully installed and plays the rotating 'italic F' animation.  Incidentally, that's a better test page than http://kb2.adobe.com/cps/155/tn_15507.html as referenced by the OP which seems out of date and claims that 10.0 is the latest version.
I've temporarily switched off my Firewall (Windows or Zone Alarm).  I've uninstalled and re-installed Flash several times for each browser on each PC, using both the Vista Control Panel and Adobe's uninstaller, I've tried switching off the hardware acceleration but nothing has fixed the problem.
Some other points (sorry if they are red herrings, please excuse my ignorance):-
If you uninstall Flash but find the test page still works, remember that the Chrome browser has Flash embedded within it.  See http://www.google.com/support/chrome/bin/answer.py?hl=en&answer=108086dobe Flash?
Is Shockwave Player the same as Adobe's Flash player?  Very confusing!
Apologies if this hasn't solved your problem, but perhaps it shows that something in Flash Player 10.1.53.64 really is broken.  If some sites never work any more but others will, it's just too much of a coincidence !