This bug is triggered by having Firefox prerference to never remember history aka private browsing before upgrade.
Do: Edit->Preferences->Privacy then under 'Firefox will:' and do 'Never remember history' to see the issue. Next after seeing the issue. If you reset for a custom setting 'Firefox will:' and un-check private browsing then downloads are offered the clear list in the download dialog once again. ** Summary changed: - Regression: Firefox 19 - Downloads complete and 'Clear List' not highlighted in 'Downnloads' dialog box + Regression: Firefox 19 - Downloads complete and 'Clear List' not highlighted in 'Downloads' dialog box -- 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/1130884 Title: Regression: Firefox 19 - Downloads complete and 'Clear List' not highlighted in 'Downloads' dialog box Status in “firefox” package in Ubuntu: New Bug description: Upgraded via normal method to Firefox 19 from 18 on Ubuntu 12.04.2 64 bit. Unlike under 18 when a download completed the 'Clear List' button was active to clear completed downloads in the 'Downloads' dialog. Under 19 this is not the case and it stays greyed out. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: firefox 19.0+build1-0ubuntu0.12.04.1 ProcVersionSignature: Ubuntu 3.5.0-24.37~precise1-generic 3.5.7.4 Uname: Linux 3.5.0-24-generic x86_64 AddonCompatCheckDisabled: False AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25. ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: philwyett 2139 F.... pulseaudio BuildID: 20130218103317 Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xc2510000 irq 45' Mixer name : 'Intel PantherPoint HDMI' Components : 'HDA:10ec0269,1179fb30,00100202 HDA:80862806,1179fb41,00100000' Controls : 24 Simple ctrls : 10 Channel: Unavailable Date: Wed Feb 20 20:23:12 2013 ForcedLayersAccel: False IfupdownConfig: auto lo iface lo inet loopback InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) 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 192.168.1.3 metric 2 192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1 MarkForUpload: True Plugins: iTunes Application Detector - /usr/lib/mozilla/plugins/librhythmbox-itms-detection-plugin.so (rhythmbox-mozilla) VLC Multimedia Plugin (compatible Totem 3.0.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla) Windows Media Player Plug-in 10 (compatible; Totem) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla) QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla) DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla) PrefSources: prefs.js ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash Profiles: Profile0 (Default) - LastVersion=19.0/20130218103317 (In use) RelatedPackageVersions: rhythmbox-mozilla 2.96-0ubuntu4.2 totem-mozilla 3.0.1-0ubuntu21.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no RunningIncompatibleAddons: False SourcePackage: firefox UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/24/2012 dmi.bios.vendor: Insyde Corp. dmi.bios.version: 1.40 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: Type2 - Board Product Name1 dmi.board.vendor: Type2 - Board Vendor Name1 dmi.board.version: Type2 - Board Version dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: OEM Chassis Manufacturer dmi.chassis.version: OEM Chassis Version dmi.modalias: dmi:bvnInsydeCorp.:bvr1.40:bd04/24/2012:svnTOSHIBA:pnSATELLITEPROL850-112:pvrPSKDHE-003004EN:rvnType2-BoardVendorName1:rnType2-BoardProductName1:rvrType2-BoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion: dmi.product.name: SATELLITE PRO L850-112 dmi.product.version: PSKDHE-003004EN dmi.sys.vendor: TOSHIBA To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1130884/+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