icedtea-web v1.2 plugin + openjdk7 builds on linux/64, but quietly fails to load in Firefox12

[jerry2can at mailcan.com]

On Tue, May 8, 2012, at 01:44 PM, Deepak Bhole wrote:
> This is strange. The strace output clearly showed that the plugin was
> being loaded.. I don't understand why it isn't seen.
> 
> Does Firefox show other plugins like the Gecko Media Player plugin in
> about:plugins?

Yes.

Given,

ls -al /usr/lib64/mozilla/plugins/
  total 1.7M
  drwxr-xr-x 2 root root 4.0K May  8 10:22 ./
  drwxr-xr-x 3 root root 4.0K Mar 22 11:28 ../
  -rwxr-xr-x 1 root root 335K May  7 17:07 gecko-mediaplayer-dvx.so*
  -rwxr-xr-x 1 root root 336K May  7 17:07 gecko-mediaplayer-qt.so*
  -rwxr-xr-x 1 root root 335K May  7 17:07 gecko-mediaplayer-rm.so*
  -rwxr-xr-x 1 root root 335K May  7 17:07 gecko-mediaplayer.so*
  -rwxr-xr-x 1 root root 335K May  7 17:07 gecko-mediaplayer-wmp.so*
  lrwxrwxrwx 1 root root   45 May  8 10:22 IcedTeaPlugin.so ->
  /usr/local/icedtea-web/lib64/IcedTeaPlugin.so*
  lrwxrwxrwx 1 root root   44 Apr  1 17:25 libflashplayer.so ->
  /usr/lib64/browser-plugins/libflashplayer.so*


Here's the about:plugins screen,

  http://imageshack.us/f/839/aboutplugins.png/