I am on ~amd64 and it happened I upgraded to a newer firefox. Surprisingly, I lost all my opened tabs, bookmarks, passswords, history ... and it turns out this version created a new configuration directory: $ ls -latr .mozilla/firefox/ total 24 drwx------ 2 mmokrejs mmokrejs 4096 Mar 15 2010 Crash Reports drwx------ 6 mmokrejs mmokrejs 4096 Oct 17 2012 .. drwx------ 15 mmokrejs mmokrejs 4096 Feb 15 10:21 2czh3u8v.default drwx------ 5 mmokrejs mmokrejs 4096 Feb 15 20:56 . -rw------- 1 mmokrejs mmokrejs 188 Feb 15 20:56 profiles.ini drwx------ 11 mmokrejs mmokrejs 4096 Feb 24 21:16 xqyip8gr.dev-edition-default $ My new, empty configuration is read from xqyip8gr.dev-edition-default. $ cat .mozilla/firefox/profiles.ini [General] StartWithLastProfile=1 [Profile0] Name=default IsRelative=1 Path=2czh3u8v.default Default=1 [Profile1] Name=dev-edition-default IsRelative=1 Path=xqyip8gr.dev-edition-default $ I do not know if I can simply drop the "Profile1" so that the old configuration will be picked up or whether the new devel binary is not backwards compatible with old configuration files ...? Either way, I think the default should be to stay with old configuration. My previous version was www-client/firefox-34.0.5-r1.
Sorry for not responding on such an old bug; firefox should never have installed as a "developer edition" from the portage tree, so I expect whatever caused that to occur was fixed shortly after you emerged it. Have you had this issue with any newer versions?
(In reply to Ian Stakenvicius from comment #1) > Sorry for not responding on such an old bug; firefox should never have > installed as a "developer edition" from the portage tree, so I expect > whatever caused that to occur was fixed shortly after you emerged it. > > Have you had this issue with any newer versions? I just synced and emerged firefox-40.0.3. I says: about: Firefox Developer Edition Build identifier: Mozilla/5.0 (X11; Linux x86_64; rv:40.0) Gecko/20100101 Firefox/40.0 about:buildconfig Build Machine vostro Build platform target x86_64-pc-linux-gnu Build tools Compiler Version Compiler flags x86_64-pc-linux-gnu-gcc 4.9.3 -Wall -Wdeclaration-after-statement -Wempty-body -Wpointer-to-int-cast -Wsign-compare -Wtype-limits -Wno-unused -Wcast-align -pipe -maes -mpclmul -mpopcnt -mavx -march=native -std=gnu99 -fgnu89-inline -fno-strict-aliasing -fno-math-errno -pthread -pipe x86_64-pc-linux-gnu-g++ 4.9.3 -Wall -Wempty-body -Woverloaded-virtual -Wsign-compare -Wwrite-strings -Wno-invalid-offsetof -Wcast-align -pipe -maes -mpclmul -mpopcnt -mavx -march=native -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions -fno-math-errno -std=gnu++0x -pthread -pipe -DDEBUG -DTRACING -g -O2 -fno-omit-frame-pointer Configure arguments --enable-application=browser --enable-optimize=-O2 --disable-pedantic --disable-updater --disable-strip --disable-install-strip --disable-installer --disable-strip-libs --disable-profilelocking --enable-single-profile --disable-profilesharing --with-system-zlib --enable-pango --enable-svg --with-system-bz2 --enable-default-toolkit=cairo-gtk2 --disable-official-branding --with-branding=browser/branding/aurora --enable-debug --enable-tests --enable-debug-symbols --enable-startup-notification --enable-necko-wifi --enable-dbus --enable-ogg --enable-wave --enable-ion --with-system-nspr --with-nspr-prefix=/usr --with-system-nss --with-nss-prefix=/usr --x-includes=/usr/include --x-libraries=/usr/lib64 --with-system-libevent=/usr --prefix=/usr --libdir=/usr/lib64 --enable-system-hunspell --disable-gnomevfs --disable-gnomeui --enable-gio --disable-crashreporter --with-system-png --enable-system-ffi --disable-gold --disable-gconf --enable-jemalloc --enable-replace-malloc --target=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-gstreamer --disable-pulseaudio --enable-system-cairo --enable-system-sqlite --with-system-jpeg --with-system-icu --enable-intl-api --with-system-libvpx --with-google-api-keyfile=/var/tmp/portage/www-client/firefox-40.0.3/work/mozilla-release/google-api-key --disable-mailnews --with-default-mozilla-five-home=/usr/lib64/firefox --enable-extensions=default Running "lsof" confirms it still opens /home/mmokrejs/.mozilla/firefox/xqyip8gr.dev-edition-default/ contents.
Amalgomating this with the other firefox USE="bindist" profile bug. *** This bug has been marked as a duplicate of bug 536682 ***