Comodo Dragon is unstable (Pages Unrepsonsive)

After updating to the latest version of Comodo Dragon I have experienced many web pages that become unresponsive. Also, when I chose to KILL pages, nothing happens (clue?). There doesn’t appear to be any pattern as to which pages become unstable. I have uninstalled and reinstalled twice. I have also tried with and without PrivDog extension. I have even deleted existing profiles before re-installing (per Comodo web site instructions). Other than completely remove CD and then re-install I am not sure what else to try - I would need assistance in knowing exactly what to delete including inside registry, etc. to do this.
The frustrating part of this is that the previous version worked very well.
SYSTEM: Win XP SP3 32-bit
Comodo AntiVirus 2012

Edit: changed font to normal size

Hi and welcome shey,
Just a couple of suggestions to try.

  1. Disable Do not allow websites to know where you came from (suppress HTTP referrer header).
  2. Disable Malware domain filtering (Comodo Secure DNS).
    Both settings found under privacy in the advanced settings.
    Advanced settings

If you find a site/page that is consistently unresponsive, please post a link if it is suitable for the Forum.

Thank you.