I had to restore my system from a Time Machine backup because of a recurring problem. Now Time machine wants to backup my entire drive as if I'm actually starting over. I've got 300GB left on my backup drive and this complete backup will use 133GB of it. I have had to do this in the past but I don't remember that Time Machine wanted to do a complete backup before. Is there something I can do to prevent it?
Yep, TM will do this after a complete restore. TM treats this as a new installation. Simple solution is to erase the TM backup drive and just allow the new backup. I don't think there is a way to get TM to simply continue with the old backup as though it just left off.