Been running 1Ghz for a few days now via Lehto's kernel. (Was initially using 125-1000/480. Now I'm running 125-1000/500dsp) Have done all the usual stuff I do on my phone since: - Watch at least few hours of xvid avi (up to 45mins in single session) - Watch youtube videos over wifi via MicroB. (about an hour straight) - Browse the web over many hours over Wifi and 3G. - Making and receiving calls. Talking up to 20mins at a time. - Angry Birds for up to an hour at a time. - DrNokSnes for about 15minutes at a time. Not noticing any abnormalities yet. Battery life is normal also. I did overclock it up to 1.2Ghz via Titan's kernel. It locked up straight away and had to reboot. lol I was able to get it running seemingly without issues at 1.1Ghz. But only tested it for an hour or so before going back to 1Ghz. (safer. lol)