Actually: here's my whole story... kind of a lil different experience for me...
Created three alarms, each one 15 minutes apart... they helped me in walking up and i would click the dismiss button and such... but most of the time, even though the phone worked without any problems, NO AUDIO! Even when i played any song on the phone or got a call or anything... Plus, the Power button only unlocked but never shut-down the phone so had to take out the battery to reset... A few times though it wasn't frozen but while unlocking or going into a hub or something, it would end up freezing.
Disabled one of the alarms and by the time i wake up, i usually find the phone frozen and unresponsive... Sometimes it would work but same problem as before, no audio at all....
Only one alarm enabled now every noon ('coz i wake up at 1:00 PM), i always find the phone frozen and have to reset...!
No Alarms enabled! Phone works SUPER DUPER FRICKIN' AWESOME!!!! Well the only time i usually do end up resetting is when Marketplace crashes out on me and doesn't start back up (which has really happened only once in a while)
Call me crazy but despite this annoying bug i'm really loving my Mozart!
Not sure if this is a HTC issue (most-likely) but I do hope that these issues are ironed out in the January/February updates!!! Keeping my fingers crossed...