The Definition Update for Windows Defender - KB915597 (Definition 1.71.269.0) has been giving me issues. I've updated to it twice only to have to do a system restore both times because it causes unexpected behavior like the computer freezing upon boot up. Anyone else having/had this problem? Also, do Windows Defender updates encompass old ones? So if I install the newer definition when it comes out, will I no longer need this one?
I'm using Vista Home Premium 64