Hi List, I have been getting the above errors for the last few months and extensive google foo has been less than conclusive - but indicates that the requesting flash player is somehow putting the wrong url content into the request.
After I recently did a yum update on my wife's laptop she too started getting these errors. She has an old sony laptop running 5.8 and other than this error on various streaming tv links it is working just fine. Needless to say, she is less than thrilled with my IT skills at this point as she can no longer watch her favourite TV programs.
So I decided to try and track down the problem on my own machine (CentOS 6.2) where yumex allows you to see and load older versions of a package. I started with a downgrade (and then a 2nd one .... and then the 5th one) of libflashplayer.so - fortunately rpmforge has older versions. Going right back to a 10.x version did not fix the problem. Thus I guess it is a firefox / xulrunner problem, however I am not happy to go back too many versions here as the exploit potential is much higher.
Then I tried konqueror with flash enabled and guess what - no problems with any of the links that fail under firefox / libflashplayer.
So my question to the list members - does anyone else have this problem with flash under firefox?? What do I do to fix it? TIA Rob