This has been verified as being the best way to stop a number of the issues that has developed after doing Froyo update, the system seem to keep the 2.1 app and settings during installation process and this seems to cause a number of incompatible issues with a number of devices.... Follow this process after completing Froyo Update to avoid problems..
Follow these settings during restore to avoid issues being restored automatically.
1. Uncheck "Back up my data" under Settings/Privacy
2. Click Factory Data Reset/Reset Phone
3. After reset is complete only Active Phone but do not input Google Email information
4. Once phone is at homepage go back into Settings/Privacy and make sure the Automatic Restore option is unchecked, even if grayed out, activate "Back up my data" and quickly disable "Automatic Restore"
5. After being sure that the Automatic Restore option is off it will be safe to log into Google and you can continue installing preferred apps and custom settings.
This process will stop all applications and settings from restoring automatically and restoring original issues that usually resolve a number of issues.