$ firefox3 /usr/lib/firefox-3.0/firefox3-bin: /usr/lib/thunderbird-2.0.0.14/libnss3.so: version `NSS_3.11.7' not found (required by /usr/lib/firefox-3.0/libxul.so) /usr/lib/firefox-3.0/firefox3-bin: /usr/lib/thunderbird-2.0.0.14/libnss3.so: version `NSS_3.12' not found (required by /usr/lib/firefox-3.0/libxul.so) ciao