I've closed the laptop cover, freezing the computer, before dinner.
When I came back, I entered the password and tried to resume the active applications, Chrome and Firefox (from launcher). Chrome didn't start, Firefox did. Weird... Tried to start Chrome from launcher several times, without success. It does seem to start, a window is briefly seen, but minimizes or closes immediately.
Cannot identify the Chrome version because it doesn't even show up. Firefox version is 23.0, Ubuntu version is 12.04 LTS.
What's happening with Chrome? It was working fine before dinner.