In case you have been living under a rock, you might not have heard that T-Mobiles HTC G2 was rooted - but only temporarily. After root was gained, it was discovered that HTC included a fail safe measure into the phone that removes root access upon reboot. This blatant attempt to stop users from rooting their phones is being called a "security measure" by HTC. T-Mobile sent the following response to Androinica after they posted an article about the inability to permanently root the G2.
As pioneers in Android-powered mobile devices, T-Mobile and HTC strive to support innovation. The T-Mobile G2 is a powerful and highly customizable Android-powered smartphone, which customers can personalize and make their own, from the look of their home screen to adding their favorite applications and more.