Firefox woes

[mz]

I'm having trouble viewing embedded flash videos in Firefox 6.0 and could use 
some advice.

I've got a dozen extensions for FF, including NoScript 2.1.2.7rc2, Flashblock 
1.5.15.1, Adblock Plus 1.3.9, Ghostery 2.5.3, and others. I'm also using 
Shockwave Flash 10.3 as the plugin to view flash videos.

After allowing the appropriate java scripts and clicking the Flashblock play, 
everything seemed to come up fine to play the video. When the play button for 
the video is clicked, it changes to the pause button, but the video does not 
download. Reloading the page without the browser cache makes no difference. 
However if the "Pop Up Player" button is clicked, a second FF window is 
opened, and everything works fine.

I don't think it should matter, but I'm using openSUSE 11.3 w/ KDE 4.4.4

Any suggestions about what might be preventing the video from playing in the 
original page or what to look at?

TIA,
Mark Z.