I'm interested in finding out how to prevent the Market App from updating. Whenever the Market App is updated (to Version 3.1.5), the app logs in just fine a few times, but then asks for a password (for google or youtube... can't remember which) after a short time. Upon entering the correct password and tapping the accept/enter/whatever button... The prompt then asks for the password over and over again.
The fix I have found that works is to un-install the (Market App) updates (to Version 2.3.4), power off and restart. Then there is no problem starting the Market App. Eventually the Market App will update automatically, then the issue of not accepting the proper password starts again. So then I un-install Market App updates. And the cycle continues.
I'm running (if it makes a difference):
System Version: 4.5.605.MB810.Verizon.en.US
Android Version: 2.3.3
Build Number: 4.5.1_57_DX5-35