Ran Lehto's 900 MHz kernel (w/ stock DSP) for 72 hours; zero problems. Switched to titan's experimental kernel with 125 on the low-end and my max frequency set to 950; been running for about 7 hours, also zero problems. Spent a few mins at 600 MHz during the transition between the two, just to make sure my perceived performance improvements weren't a placebo effect. I wanted to tear my eyes out. 600 was SO slow, I will never go back. I'd MUCH rather have a short life time of use with a smooth UI and end up with a fried brick than endure a long life time of the out-of-the-box performance of this mediocre UI.