two times yesterday i had to SBF my phone because of a bootstrap issue.
What I think is happening is when I backed up all my apps on GB, it included Droid 2 Bootstrap, and then once on Liberty 2.0 I backed them up again and Droid X Bootstrap was included. Then after restoring my apps after an SBF, it installs both bootstraps which causes a problem with them.
The 3rd crash I didnt restore either bootstrap and installed the Droid X Bootrstrap directly from market.
What would happen after installing a theme or doing a backup is that the phone would show the boot logo but then the screen goes black and no boot animation is shown.
Just a friendly reminder for anyone that has had similar problems.