Same issue: disabled the gtalk plugin and ran sudo add-apt-repository ppa:sevenmachines/flash && sudo apt-get update && sudo apt-get install flashplugin64-installer. Issue was resolved immediately.
Same issue: disabled the gtalk plugin and ran sudo add-apt-repository ppa:sevenmachin es/flash && sudo apt-get update && sudo apt-get install flashplugin64- installer. Issue was resolved immediately.