BB Bold 9000 :: Clock Alarm Time Turned Hand - Held Off

I've recently upgraded my Bold 9000 software device software from v4.6 to v5. Everything work excellent EXCEPT from the Clock-Alarm Sound !!. When my hand-held is Activated, it works according to my relative settings. The problem is when I've set a Clock-Alarm time and turned my handhold OFF. When the time comes, the handheld wakes-up (as it should normally do), displays the dialog form regarding the snooze or the alarm termination but there's NO SOUND AT ALL !!. I've searched the community for regarding problems and I've tried to apply to my handheld every potential suggestion like: 1). usage of a build-in simple sound 2). a sound file stored on my handheld's device memory and not onto an external card 3). battery correct physical enforcement 4) and of course, many-many baterry pool outs (for hard reset) !! Unfortunately nothing worked !! Because i use my handheld as my main (only) wake-up alarm in the morning, I tried to make the following test: 1). Selected the "No Sound" profile (I don't want an accidental call to wake me up after midnight..).....