It's an obvious one. It's a big sign, one that can easily be written off as a silly accident or those crazy nerds down in IT fooling around again. But read into it, read between the lines and make huge leaps of assumption, because your email account doesn't get deactivated for no reason! They jumped the gun! In between fixing fourteen different laptops infected with the same virus, someone who isn't paid enough o care has accidentally disabled your email account two weeks early. Sure, they'll say it's an accident, they'll say it was just a mishap and won't happen again. Don't trust them. You see how they're wringing their hands and avoiding your eye contact? That's because they've got a big heavy email sitting on their office computer asking them to shut down all your company IT assets within a day of your termination, which is coming very soon. It's happening, it's time to get out.