Secure DNS and Cisco VPN

When I run Cisco VPN Anyconnect Mobility Client
on my Windows XP Thinkpad, after a minute or two, it crashes and then
I have to reboot.

After playing around a bit,
I found that if I turned off “Secure DNS” in the components
of AVAST antivirus it stopped doing this.

I guess I can live without Secure DNS, but I was wondering
if this happened to anyone else.

  • Which Avast…? (Free/Pro/IS/Premier)
  • Which version…?
  • OS…? (32/64 Bit…? - which SP/Build…?)
  • Other security related software installed…?
  • Which Avast…? (Free/Pro/IS/Premier)
    Pro

  • Which version…?
    12.3.2280 build 12.3.3154.23

  • OS…? (32/64 Bit…? - which SP/Build…?)
    Windows XP 32bit SP3 Build 2600

  • Other security related software installed…?
    No.

https://www.avast.com/faq.php?article=AVKB188