Originally Posted by spartanhooah
Another thing I've noticed is that when it boots, I get a sideways (i.e. landscape) android logo flashing on top of the Sprint and Galaxy S logos
This is caused by added support for boot animations.
The boot animation in the kernel (animated android) is playing along with the stock boot animation (sprint 4g animation).
You can delete the 3 files files of the stock animation, which will just leave the Android animation, or you can install a custom boot animation update, that removes the stock one, and installs a custom one.