Hi I posted this bug to bugzilla: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=242175

you can see the video and the bug here: http://www.youtube.com/watch?v=-_ayaoEUHZ4

The issue is really easy to reproduce;

shutdown firefox

mv .mozilla .mozilla.bkp mv .macromedia .macromedia.bkp

<repeat 5 times>

and then launch firefox and go to http://www.youtube.com - and try to install flash plugin.

Close Firefox

rm .mozilla rm .macromedia

</repeat 5 times>

and then restore your firefox settings from backup:

rm .mozilla rm .macromedia

mv .mozilla.bkp .mozilla mv .macromedia.bkp .macromedia

then report back to bugzilla (or here on the mailing list) how many installs of flash succeeded and how much of them failed.

this is an easy task, and then we will see if this is a issue happened by some off chance only to me or this is a bug.

I don't see how you don't see the problem here. I posted a bug also for fedora 7 test 4, it happened there also... and how it happened again... so you draw your own conclusions...