After a few exchanges with the Intuit folks (see the comments here) here is what they finally had to say on this matter:
Recently you requested assistance from Quicken Customer Care. Below is a summary of your request and our response. We are committed to resolving this issue to your complete satisfaction.
Thank you for allowing us to be of service to you.
Need to revert back to R5 from R7 release
Response (Shivani) 02/25/2010 01:10 AM
Dear Marc Bourassa,
Thank you for contacting Quicken Customer Care.
I can completely understand your concern.
Marc, I would like to inform that issue will resolve in next few weeks. You can visit the link given below to know more about:
You cannot revert back to R5.
I hope this clarifies.
I had found the link above on my own a couple of days ago and am waiting for them to fix the issue. In the meantime I’m keeping updates turned off and I will be ignoring future update reminders (when this issue has been dealt with) for a week or so to ensure that they don’t cock things up for me again.