http://bugs.winehq.org/show_bug.cgi?id=26334
--- Comment #6 from Stefan Persson spe@inducks.org 2011-05-20 04:22:09 CDT --- Appears to apply to all Firefox 1.6.x and Seamonkey 2.0.x regardless of Firefox/Seamonkey language. In particular, the Firefox you get by downloading http://download.mozilla.org/?product=firefox-3.6.17&os=win&lang=en-U... has this problem. I just tried using a clean Wine directory ("rm -rf ~/.wine" before running the installer) with Wine 1.3.20, and the bug still applies.
I need the old Firefox 1.6.x version because of a Win/Mac-only plugin which refuses to work with Wine+Firefox 4.0.x. I've only got it to work with Wine+Firefox 1.6.x/Seamonkey 2.0.x.