Hi, I had the same problem and I solved finding the problematic extension/plugin.
First I used this: http://support.mozilla.org/en-US/questions/924733 In my case, the extension that was the "Global Menu Bar integration 3.5.4", which integrates the FF menu to the Unity panel. When I disabled it and restarted the FF, the "always on top" problem was solved. Probably some integration to Unity no longer works, but for now it's ok for me. -- 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/1023683 Title: Firefox is always on top of other windows!! Status in “firefox” package in Ubuntu: Confirmed Bug description: In Ubuntu 12.04 the Firefox windows can't be minimized I thought is is bug in the Unity, but it seems only Firefox shows such behaviour. I try to minimize it, it would be minimized, then clicking on other program to maximize --> Firefox window would pop up over all windows. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: firefox 13.0.1+build1-0ubuntu0.12.04.1 ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21 Uname: Linux 3.2.0-27-generic x86_64 NonfreeKernelModules: nvidia AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: maher 27768 F.... pulseaudio /dev/snd/controlC0: maher 27768 F.... pulseaudio BuildID: 20120615112143 Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf6500000 irq 52' Mixer name : 'Realtek ALC892' Components : 'HDA:10ec0892,15585102,00100302' Controls : 38 Simple ctrls : 21 Card1.Amixer.info: Card hw:1 'NVidia'/'HDA NVidia at 0xf6080000 irq 17' Mixer name : 'Nvidia GPU 15 HDMI/DP' Components : 'HDA:10de0015,10de0101,00100100' Controls : 24 Simple ctrls : 4 Channel: release Date: Wed Jul 11 22:10:38 2012 ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback IpRoute: default via 192.168.2.1 dev wlan0 proto static 169.254.0.0/16 dev wlan0 scope link metric 1000 192.168.2.0/24 dev wlan0 proto kernel scope link src 192.168.2.13 metric 2 MostRecentCrashID: bp-a64bd39b-b84b-420d-b5ef-1b2d22120408 PrefErrors: Unexpected character before close parenthesis @ [Profile]/extensions/zot...@chnm.gmu.edu/defaults/preferences/zotero.js:11 Profiles: Profile0 (Default) - LastVersion=13.0.1/20120615112143 (In use) RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False SourcePackage: firefox SubmittedCrashIDs: bp-a64bd39b-b84b-420d-b5ef-1b2d22120408 bp-653f534e-1816-432a-96f6-75c5b2120408 bp-120d67dd-ccd4-4e68-b127-435442120408 bp-977b139f-8065-46cc-b9c6-172a42120330 UpgradeStatus: Upgraded to precise on 2012-05-08 (64 days ago) dmi.bios.date: 08/09/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.4 dmi.board.asset.tag: Not Applicable dmi.board.name: Serval Professional dmi.board.vendor: System76, Inc. dmi.board.version: serp7 dmi.chassis.asset.tag: Not Applicable dmi.chassis.type: 10 dmi.chassis.vendor: System76, Inc. dmi.chassis.version: serp7 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.4:bd08/09/2011:svnSystem76,Inc.:pnServalProfessional:pvrserp7:rvnSystem76,Inc.:rnServalProfessional:rvrserp7:cvnSystem76,Inc.:ct10:cvrserp7: dmi.product.name: Serval Professional dmi.product.version: serp7 dmi.sys.vendor: System76, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1023683/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
