when your blackberry drops to lower case gprs it means that it has lost connection to the RIM relay. If it drops to GSM you may have gone out of coverage or the gprs network was down. a hard reset will cure the problem by taking the battery out without turning the handheld off and and then replacing it. also you could go to settings and go to host routing table open it up and click on the entry and click register now. if they dont work contact your air time provider as there is most likely a network outage. : P