(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:27:35: Junk at end of value

(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:40:48: Junk at end of value

(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:48:46: Junk at end of value

(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:59:58: Junk at end of value

(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:70:46: Junk at end of value

(firefox:16520): Gtk-WARNING **: Theme parsing error: gtk.css:81:58: Junk at end of value
1486114391029	addons.xpi-utils	WARN	Extensions database /home/laura/.mozilla/firefox/21ikz009.default/extensions.json exists but is not readable; rebuilding: [Exception... "Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIFileInputStream.init]"  nsresult: "0x80520015 (NS_ERROR_FILE_ACCESS_DENIED)"  location: "JS frame :: resource://gre/modules/addons/XPIProvider.jsm -> resource://gre/modules/addons/XPIProviderUtils.js :: this.XPIDatabase.syncLoadDB :: line 584"  data: no] Stack trace: this.XPIDatabase.syncLoadDB()@resource://gre/modules/addons/XPIProvider.jsm -> resource://gre/modules/addons/XPIProviderUtils.js:584 < this.XPIProvider.checkForChanges()@resource://gre/modules/addons/XPIProvider.jsm:3825 < this.XPIProvider.startup()@resource://gre/modules/addons/XPIProvider.jsm:2813 < callProvider()@resource://gre/modules/AddonManager.jsm:235 < _startProvider()@resource://gre/modules/AddonManager.jsm:788 < AddonManagerInternal.startup()@resource://gre/modules/AddonManager.jsm:972 < this.AddonManagerPrivate.startup()@resource://gre/modules/AddonManager.jsm:3016 < amManager.prototype.observe()@resource://gre/components/addonManager.js:71
1486114397353	addons.repository	ERROR	Malformed addons.json: Unix error 13 during operation open on file /home/laura/.mozilla/firefox/21ikz009.default/addons.json (Permesso negato) - resetting to empty
ExceptionHandler::GenerateDump cloned child 16564
ExceptionHandler::SendContinueSignalToChild sent continue signal to child
ExceptionHandler::WaitForContinueSignal waiting for continue signal...
laura@ubuntu-eee:~$ 
(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:27:35: Junk at end of value

(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:40:48: Junk at end of value

(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:48:46: Junk at end of value

(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:59:58: Junk at end of value

(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:70:46: Junk at end of value

(crashreporter:16565): Gtk-WARNING **: Theme parsing error: gtk.css:81:58: Junk at end of value