Hum, actually running under an upstart session add one more value to XDG_CONFIG_DIRS, that's maybe why we saw it on a standard Lubuntu session (which use upstart session) and not on the others. But I'm surprised Xubuntu doesn't have the same problem, since they should have merely the same numbers of directory in XDG_CONFIG_DIRS.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1278062 Title: firefox crashes on startup (but apparently layunched properly to enable me to post this) Status in “firefox” package in Ubuntu: Confirmed Bug description: I tried launching from a terminal window after the first crash and got this: ~$ firefox (process:2974): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed Segmentation fault (core dumped) ~$ ==================== ~$ lsb_release -rd Description: Ubuntu Trusty Tahr (development branch) Release: 14.04 ~$ apt-cache policy firefox firefox: Installed: 25.0+build3-0ubuntu0.13.10.1 Candidate: 25.0+build3-0ubuntu0.13.10.1 Version table: *** 25.0+build3-0ubuntu0.13.10.1 0 500 http://us.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages 100 /var/lib/dpkg/status ~$ ProblemType: Crash DistroRelease: Ubuntu 14.04 Package: firefox 25.0+build3-0ubuntu0.13.10.1 ProcVersionSignature: Ubuntu 3.13.0-8.27-generic 3.13.2 Uname: Linux 3.13.0-8-generic x86_64 AddonCompatCheckDisabled: False ApportVersion: 2.13.2-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: a 1919 F.... pulseaudio BuildID: 20131028112446 CRDA: Error: [Errno 2] No such file or directory: 'iw' Channel: Unavailable CrashCounter: 1 CurrentDesktop: LXDE Date: Sun Feb 9 05:43:26 2014 ExecutablePath: /usr/lib/firefox/firefox ForcedLayersAccel: False IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2013-11-22 (78 days ago) InstallationMedia: Lubuntu 14.04 "Trusty Tahr" - Alpha amd64 (20131102) IpRoute: default via 192.168.0.1 dev wlan0 proto static 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.101 metric 9 MostRecentCrashID: bp-3359569a-fc3a-40e2-978d-e68d72120711 PrefSources: prefs.js [Profile]/extensions/{3d7eb24f-2740-49df-8937-200b1cc08f8a}/defaults/preferences/flashblock.js [Profile]/extensions/{0545b830-f0aa-4d7e-8820-50a4629a56fe}/defaults/preferences/defaults.js ProcCmdline: /usr/lib/firefox/firefox Profiles: Profile0 (Default) - LastVersion=25.0/20131028112446 RelatedPackageVersions: gecko-mediaplayer 1.0.8-4ubuntu1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False SegvAnalysis: Skipped: missing required field "Disassembly" Signal: 11 SourcePackage: firefox SubmittedCrashIDs: bp-3359569a-fc3a-40e2-978d-e68d72120711 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 02/17/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.name: NutMeg dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.02 dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.12:bd02/17/2009:svnHP-Pavilion:pnFQ578AAR-ABAs3707c:pvr:rvnPEGATRONCORPORATION:rnNutMeg:rvr1.02:cvnHewlett-Packard:ct3:cvrChassisVersion: dmi.product.name: FQ578AAR-ABA s3707c dmi.sys.vendor: HP-Pavilion To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1278062/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

