An e-mail from a vendor, somewhat anonymized:
Sent: Wednesday, April 11, 2012 08:22 AM
Subject: MumbleWare Case 123456789
Thank you for contacting MumbleWare Product Support. I am writing to you in reference to case number 123456789 regarding your request to change your SA password. In MumbleWare versions 8.2 and below, the SA password must be set to propq. If a different password is used, MumbleWare may not be able to communicate with the database and error messages will be generated. The attached KB article references the fact that the SA password must be set to propq in MumbleWare versions 8.2 and below. The second KB article lists the steps involved in moving from MumbleWare 8.2 to 8.3.
It's only been a decade since we first asked the obvious question "Can we change our SQL Server SA password without breaking your application".
I guess we finally can.