I've tried several times to flash CM and my LEDs still don't work. Not for missed calls or text messages. Any idea. It's a no go even on Bugless Beast too. I don't know whats wrong?
have you also looked under call settings to make sure there's a check in "missed call LED notify"?
and under settings for texts > notification settings > blink LED ?
also like posted above, apps can screw it up too, like missed call, handcent, etc....