Gnome3 showed Firefox-bin instead of Firefox in the tasklist; as firefox and firefox-bin are really the same binary just the the first one to execute
--- a/MozillaFirefox/mozilla.sh.in Wed Jul 18 07:23:34 2012 +0200
+++ b/MozillaFirefox/mozilla.sh.in Wed Jul 18 07:24:27 2012 +0200
@@ -57,7 +57,7 @@
MOZ_DIST_BIN="%PREFIX"
MOZ_DIST_LIB="%PROGDIR"
MOZ_APPNAME="%APPNAME"
-MOZ_PROGRAM="$MOZ_DIST_LIB/$MOZ_APPNAME-bin"
+MOZ_PROGRAM="$MOZ_DIST_LIB/$MOZ_APPNAME"
MOZ_APP_LAUNCHER="$MOZ_DIST_LIB/$MOZ_APPNAME.sh"
if [ "$0" = "$MOZ_APP_LAUNCHER" ]; then