superuser permissions not working. i've already wiped and reflashed fresh 2.1.1. when i try to open superuser permissions all i see is a black screen. also when i use htc sense, it seems to suck up battery really fast but it runs smooth. but when i switch to the nexus launcher it takes a while to load up all the icons on the main screen. i've tried to search but it seems like the search is not accurate in hunting down the threads for me because when i try to create this thread, i see more similar threads than just simply searching for it through the top right search box.