is this the default cent ff and SM from the cent repos ???
WHY use the OLD seamonkey 2.28 ?????
the current is 2.35
question :
1) what seamonkey did you install
and
2)
in the seamonkey install folder did you MANUALLY make a "plugins" folder ?
and did you sim link the /usr/lib64/browser-plugins files to the plugins folder you made in the seamonkey folder ?
there are TWO seamonkeys the
DEFAULT 32 bit that needs to use the 32 bit wrappers on the 64 bit OS ( and use the 32 BIT!!! plugins in /usr/lib )
or the custom 64 bit build that uses the native 64 bit plugins and dose not need to use the wrapper and the 32 bit plugins
the 64 bit seamonkey
https://ftp.mozilla.org/pub/mozilla..../2.35/contrib/
or the 32 bit
http://www.seamonkey-project.org/
for the 32 bit seamonkey on a 64 bit OS you need to instal lthe 32 bit flash
or
use the 64 bit seamonkey
the SAME gos for firefox
if it is the 32 bit FF you need to use the 32 bit flash