user_pref("dom.disable_open_during_load", true);

[Martin Poirier]

This is wonderful... god job guys ;)

PS, if you don't know what i'm talking about, see the 0.9.4 release 
notes http://www.mozilla.org/releases/mozilla0.9.4/
and bug 92955 http://bugzilla.mozilla.org/show_bug.cgi?id=92955