1.

2.

suggested before
3.

The Block All Mode option in the right click menu isn't enough?
4. You get a basic core file when it is downloaded. I don't see much of a difference in bundling the most current def with the install package or downloading it separately. Comodo has the ability to block and prevent malware from running without the most current def package (by manually blocking them), which is far better than most other products can do without the latest def. Offline def packages get a

from me, and have also been suggested before for updating networked PCs.