Thanks, closing the applications made the difference. I think the main culprit was the sprint navigation software that I tried out but never fully closed it and it was running in the background trying to pick up my location while draining the battery in the process.
Oh yeah, navigation software is a hog, more so than media player. I'm glad it worked out for you. Also, if you ever wanted to know how strong your signal is do this: Press Alt. key on your BlackBerry and, while holding it, type "NMLL" without "Quotation Marks". Once you do it, instead of bars you will see numbers - the less is better, i.e. -63 is ideal, and -107 is when you could barely make or receive a call.
Let me know if this is useful.
Chaim.