i just opened my Kindle app, browsed though a book, then closed and swiped away. I then reopened the app and it worked fine. I am using 3.0.5 and have not opened the app since the update. My TP is fairly standard with minimal patches and no uberkernel.
VZW Pre+ 1.4.5 500/1000 on demand Lithium 418
White ATT Veer 2.1.2 with 1.4 on demand Lithium 122
Black ATT Veer 2.1.2 Stock Lithium 196 - broken screen, spare parts
webOS internals NA Pre3 2.2.4 Stock Lithium 111