$ firefox
No running windows found
which: no soundwrapper in (/usr/bin:/bin:/usr/X11R6/bin:/usr/kde/3.5/bin:/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.1.1:/usr/kde/3.5/bin:/usr/kde/3.5/bin:/usr/qt/3/bin:/usr/qt/3/bin)

(firefox-bin:5718): Pango-WARNING **: shape engine failure, expect ugly output. the offending font is 'Arial 8.2490234375'
/usr/libexec/mozilla-launcher: line 119:  5718 Segmentation fault      $(type -P aoss) "$mozbin" "$@"
firefox-bin exited with non-zero status (139)