Originally Posted by theorangeman
...as well as Mini Opera...
This is likely the source of your problem. It has been reported by several, including me, that browsing with Opera Mini will sometimes render your data connection useless. A battery pull (or Soft Reset) seems to be the only cure.
I cannot find the cause, or a pattern for this behavior. I did update the OS on my Pearl 8130 over the weekend (Alltel's latest releasse .81) and have not had the problem since (fingers crossed). Maybe this is a RIM OS problems and not an Opera Mini problem. Time will tell for me.