Hey all, hoping you can help me out ASAP... At work I inserted a company USB stick with files already on it. Almost instantly my pro (2011) froze - can't move the cursor and the keyboard won't respond - and a message popped up in several languages: "You need to restart your computer. Hold down the Power button until it turns off, then press the Power button again." (Attached picture - Thank god for smartphones.) I thought it might be a kernel panic but a quick search gives me the impression most restart messages still let you navigate your laptop so I'm worried I've downloaded something off the USB stick. Should I restart anyway?