Problem with external Sound

[ahasver]

Hi all i am a new member here just getting my bearings and started having a problem as well.

i have a sprint HTC Mogul.
i had nothing installed but HTC home plugin and Emunuts Customizer.
after installing those two things i now notice that my ringer and vibration shut off during the day. i get calls but the phone doesnt ring. i get text messages but there is no alert. i go into ring tones to see what is happening and press play for the previews and no sound is emitted. i checked my phones master volume and they are both set to high device and ringer.

i uninstalled both and still have the problem. i have since hard cleared my Mogul to factory and still have the problem.
i have installed Spybot S&D mobile, HTC home plugin, TCMP player with flash pack to watch youtube. oxious hibernate and a few themes for the phone.

it works every time i soft reset it but randomly through the day the ringer and vibe will shut off for no reason. the phone is usually locked and in my pocket during the day.

any clues ?