Since jrummy's app has been pulled I tried Unstable Software's DX/2 Overclocker app from the market. Not as polished, but it worked perfectly to begin with (set at 1.3ghz and was super stable on rooted 2.2.1). However, I went to change the frequency and it froze, rebooted right away. Now, every time I try to overclock it, even if I'm setting it to the stock frequency, it reboots right away. I've tried it on rubiX's 1.9.0 and it does the same thing. I also wiped system and reinstalled the leak, same result. Thanks in advance!