Hi! Here is two snapshots of the but, one mouse (that doesn't appears at 
them) is at the "archivos" menu bar and second mouse has been moved to 
cross, minimize y maximize and they disappears...
The bug has coming after playing Steam game, I don't know if it causes 
the bug.


El 02/08/13 11:51, Adolfo Jayme Barrientos escribió:
> If this happens "in every window" as you stated, then it's not a bug in
> firefox. It would be great if you attached a screenshot or a video of
> this behavior.
>
> ** Package changed: firefox (Ubuntu) => ubuntu
>
> ** Changed in: ubuntu
>         Status: New => Incomplete
>
> ** Summary changed:
>
> - No puedo cerrar ventanas con el icono de la cruz.
> + Unable to close any window by clicking on its ✕
>
> ** Description changed:
>
> - No puedo cerrar ninguna ventana abierta desde el botón de la cruz
> - naranja. Cuando intento poner el cursor encima de ella, desaparece y
> - sale encima el título de ventana. Ocurre en firefox y en cualquier otra
> - ventana.
> + I am unable to close any window by clicking the orange cross button. If
> + I hover it, it disappears and the window's title gets over its place.
> + Happens in firefox and in every other window.
>    
>    ProblemType: Bug
>    DistroRelease: Ubuntu 13.04
>    Package: firefox 22.0+build2-0ubuntu0.13.04.2
>    ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
>    Uname: Linux 3.8.0-27-generic i686
>    NonfreeKernelModules: fglrx
>    AddonCompatCheckDisabled: False
>    ApportVersion: 2.9.2-0ubuntu8.1
>    Architecture: i386
>    AudioDevicesInUse:
> -  USER        PID ACCESS COMMAND
> -  /dev/snd/controlC1:  joaquin    2478 F.... pulseaudio
> -  /dev/snd/controlC0:  joaquin    2478 F.... pulseaudio
> +  USER        PID ACCESS COMMAND
> +  /dev/snd/controlC1:  joaquin    2478 F.... pulseaudio
> +  /dev/snd/controlC0:  joaquin    2478 F.... pulseaudio
>    BuildID: 20130627160928
>    CRDA:
> -  country ES:
> -  	(2402 - 2482 @ 40), (N/A, 20)
> -  	(5170 - 5250 @ 40), (N/A, 20)
> -  	(5250 - 5330 @ 40), (N/A, 20), DFS
> -  	(5490 - 5710 @ 40), (N/A, 27), DFS
> +  country ES:
> +   (2402 - 2482 @ 40), (N/A, 20)
> +   (5170 - 5250 @ 40), (N/A, 20)
> +   (5250 - 5330 @ 40), (N/A, 20), DFS
> +   (5490 - 5710 @ 40), (N/A, 27), DFS
>    Channel: Unavailable
>    Date: Fri Aug  2 01:42:53 2013
>    EcryptfsInUse: Yes
>    ForcedLayersAccel: False
>    IfupdownConfig:
> -  # interfaces(5) file used by ifup(8) and ifdown(8)
> -  auto lo
> -  iface lo inet loopback
> +  # interfaces(5) file used by ifup(8) and ifdown(8)
> +  auto lo
> +  iface lo inet loopback
>    InstallationDate: Installed on 2013-02-19 (163 days ago)
>    InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
>    IpRoute:
> -  default via 192.168.1.1 dev wlan0  proto static
> -  169.254.0.0/16 dev wlan0  scope link  metric 1000
> -  192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.36  metric 9
> +  default via 192.168.1.1 dev wlan0  proto static
> +  169.254.0.0/16 dev wlan0  scope link  metric 1000
> +  192.168.1.0/24 dev wlan0  proto kernel  scope link  src 192.168.1.36  metric 9
>    MarkForUpload: True
>    MostRecentCrashID: bp-9796d021-db64-4ddf-9bf3-1e4012130727
>    PrefSources: prefs.js
>    ProcEnviron:
> -  SHELL=/bin/bash
> -  PATH=(custom, no user)
> -  LANG=es_ES.UTF-8
> -  XDG_RUNTIME_DIR=<set>
> +  SHELL=/bin/bash
> +  PATH=(custom, no user)
> +  LANG=es_ES.UTF-8
> +  XDG_RUNTIME_DIR=<set>
>    Profiles: Profile0 (Default) - LastVersion=22.0/20130627160928 (In use)
>    RelatedPackageVersions:
> -  adobe-flashplugin 11.2.202.297-0raring1
> -  totem-mozilla     3.6.3-0ubuntu6
> -  rhythmbox-mozilla 2.98-0ubuntu5
> +  adobe-flashplugin 11.2.202.297-0raring1
> +  totem-mozilla     3.6.3-0ubuntu6
> +  rhythmbox-mozilla 2.98-0ubuntu5
>    RfKill:
> -  0: phy0: Wireless LAN
> -  	Soft blocked: no
> -  	Hard blocked: no
> +  0: phy0: Wireless LAN
> +   Soft blocked: no
> +   Hard blocked: no
>    RunningIncompatibleAddons: False
>    SourcePackage: firefox
>    SubmittedCrashIDs:
> -  bp-9796d021-db64-4ddf-9bf3-1e4012130727
> -  bp-d58bb477-9430-4d50-95bc-d2f242130424
> +  bp-9796d021-db64-4ddf-9bf3-1e4012130727
> +  bp-d58bb477-9430-4d50-95bc-d2f242130424
>    UpgradeStatus: Upgraded to raring on 2013-04-26 (97 days ago)
>    dmi.bios.date: 11/25/2009
>    dmi.bios.vendor: American Megatrends Inc.
>    dmi.bios.version: 0506
>    dmi.board.asset.tag: To Be Filled By O.E.M.
>    dmi.board.name: M4A785TD-V EVO
>    dmi.board.vendor: ASUSTeK Computer INC.
>    dmi.board.version: Rev X.0x
>    dmi.chassis.asset.tag: Asset-1234567890
>    dmi.chassis.type: 3
>    dmi.chassis.vendor: Chassis Manufacture
>    dmi.chassis.version: Chassis Version
>    dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0506:bd11/25/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A785TD-VEVO:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
>    dmi.product.name: System Product Name
>    dmi.product.version: System Version
>    dmi.sys.vendor: System manufacturer
>