may i ask how much did you pay for your lg eve ?
for issue 1:
you should find settings in messenger itself, or settings to hide the sound.
that can save on some battery power as we know it's a hog on battery life.
for issue 2:
i never had success doing that, i would like to know how to do that too.
for issue 3:
since your phone is 'unlocked' i would think you have the ablitly to uninstall any apps pre-loaded. go to settings,manage applications, then pull up the app you want to dump and see what option it gives you. i got my eve from rogers approx 1 mth ago, i wish i could get rid of stuff i'll never use, moxier, telenav (i have a stand alone gps and not intrested in spending an extra $10/mth to subscribe),google talk & others i can't remember at the moment. i wonder if i put the app in my trash can it will not pop up in my advanced task killer. i must try that as my phone is locked. did you buy a code from ebay to unlock your eve?