You are using a custom ROM in a phone that's not officially supported by cyanogen... If you don't feel comfortable with it you can buy a better phone or you can help to develop. If you can't do nothing of the above just be polite and report the bugs.
My phone freezes... I click on power button and nothing appens, people try to call me and the phone just not wake up. For the caller it appears that the phone is ringing but nothing happens. i have to remove the battery and put it again.