Is there Malware on this computer?

Viruses and worms
1

I am seeking help for my son-in-law’s computer. It is an HP model A6419FH running Windows Vista Home Premium 32 bit SP2. The initial signs of infection involved the following:

  1. Sometimes cannot access the internet even though IE security settings are set to default level.
  2. Over time it turns off some or all of the Avast shields.
  3. Can no longer uninstall programs.
  4. Runs extremely slow even though nothing is accessing the internet.

I have generated the various log files required for help in this forum by running MBAM, FRST, and aswMBR. The files are attached.

Since installing and running MBAM I have noticed the speed of the computer has improved. I find it odd that I am able to uninstall MBAM if I desire, but no other program installed on the computer from the Control Panel.

I would like to request a resident expert review of the attached logs to see if anything there suggests the presence of malware. If so, could a fixlist be generated? Thank you.