Hello and welcome to the Vista Forums!
Often more than one report is required, because we are primarily looking for patterns in inexact reports. However, I have analysed what you have provided me with.
Although I cannot be certain, it looks as though your BSoD was caused by AVG.
My recommendation would be to remove AVG, and make sure that it cannot be that. If you are un/less willing to do this, then I completely understand, and we can wait for more reports and clues.
I would reccomend the free Microsoft Security Essentials as an excellent alternative (better than AVG many would say, including both security experts and BSoD experts) If you choose this, as I strongly recommend, download the installer from here, and save it to your Desktop: www.microsoft.com/security_essentials
Then download the AVG removal tool from here: Comprehensive List of Uninstallers or Removal Tools for Antivirus Software | Raymond.CC Blog
Restart your computer, and immediately install Microsoft Security Essentials and update it.
Lastly, please tell me what you chose to do about AVG, and if you do receive any more BSoDs, please run this tool instead: Blue Screen of Death (BSOD) Posting Instructions