Don't talk about computers on company time… unless it's my computer

My computer hobbying has gotten around the office and co-workers have asked me a more than one computer question.  Today, one of the engineers was asking me about upgrading his processor and as I told him what he’d have to do the engineer saw his manager coming over and quickly switched topics when the manager says hi and immediately looks over his shoulders looking for his boss and asks me what he needs to do de-crap his daughter’s computer.