I was exploring PortableFreeware.com and I found this:
http://www.portablefreeware.com/index.php?p=2&so=p (scroll down to see the Firefox Portable section)
Stealth: No. By default, crash files are created in the %APPDATA%Mozilla directory. To make stealth, edit \App\Firefox\application.ini and replace:[Crash Reporter] Enabled=1 ServerURL=https://crash-reports.mozilla.com/submit
with:[Crash Reporter] Enabled=0 ServerURL=https://crash-reports.mozilla.com/dontsubmit MOZ_CRASHREPORTER_DISABLE=1
This will ensure only an empty directory is created.
I searched about it, and I found somebody reported a bug in thunderbird, but not firefox.
Has this been fixed? I saw the date i was last updated (June 28, 2010) and it made me think no. But their screenshot is out of date so it makes me confused!