I am not connected to Avast, just another person who has their Internet Security installed on both of my computers. Perhaps I can help you with your questions.

I am sorry you had all of these issues. You mentioned you updated from the free version 8.0.1489 to 9.0.2007. I am sorry if I am reading your post wrong, but did you completely remove 8.0.1489 from your computer? Using the uninstall utility, add and remove in your control panel, then using CCleaner to make sure ALL of your registry keys, etc has been completely removed from your computer. Then download 9.0.2007.

Do you have any other Anti-Virus installed on your computer, please? What other Security programs do you have installed that may or may not be causing conflict issues with Avast, please?

Even if you kept the 9.0.2007 version installed on your computer, there is a Repair option in the Add/Remove programs in your computer.

Restart your PC.
Repair the avast! installation:
Click on “Start”, find “Control Panel” and click on it. A new window will open.
In this window you should see the icon " ADD/REMOVE PROGRAMS" (or “Programs
and Features”). Then choose the “avast! Antivirus” and select “REPAIR”.

Restart your PC again.

http://forum.avast.com/index.php?topic=106815.msg849639#msg849639

Thank You Miroslav Jansik for the above link to help this member solve the issues

NOTE When I find info on this forum written by Expert members, I will give them credit and thank them for posting what ever I use for other members in need of help.

Have any questions, please feel free to ask them and I will try my best into answering them for you.