If you have BackupAssist on your machine, It is a good possibility that is your problem.
Your version is also a little old, new version is 5.0 .
I would suggest that you do the follow up actions mentioned in the comments section listed below the article you linked to.
To help you make sure, you could go to
Crashes and Debugging - Windows 7 Forums, and submit a report.
Run the
Blue Screen of Death (BSOD) Posting Instructions which includes the Debugger mentioned in the article, and our BSOD Team can take a look at it for you.
Give a brief synopsis of your problem to help the team understand what you feel is happening, and your suspicions about BackupAssist. You could even refer them back to here or to the link.
The team may suggest that you follow the Wilderssecurity thread.