$ genlop -t mozilla-firefox
* www-client/mozilla-firefox
Sat Jan 28 11:51:54 2006 >>> www-client/mozilla-firefox-1.0.7-r4
merge time: 52 minutes and 38 seconds.
Fri Feb 17 06:20:58 2006 >>> www-client/mozilla-firefox-1.0.7-r4
merge time: 1 hour, 13 minutes and 59 seconds.
Sat Mar 4 12:44:50 2006 >>> www-client/mozilla-firefox-1.0.7-r4
merge time: 52 minutes and 56 seconds.
Mon Apr 17 20:31:09 2006 >>> www-client/mozilla-firefox-1.0.8
merge time: 1 hour, 4 minutes and 16 seconds.
Wed May 10 05:46:18 2006 >>> www-client/mozilla-firefox-1.0.8
merge time: 54 minutes and 24 seconds.
Voilà ^^
Sur mon PIV 1.9GHz il faut environ une heure pour compiler Firefox.