Over the last two weeks I am finding that my N900 battery is discharging very quickly when I am not on a wifi connection. It appears that the N900 is continually using the HSPA connection as the 3.5G symbol is showing. I have tried closing all other applications, but the symbol remains on. If I change the MfE settings to manual sync then the symbol changes back to 3G. However if I manually sync then the 3.5G symbol stays on. It is as though the MfE is not "hanging" up when using the HSPA connection, but not having this problem on wifi. Is there any option other than reflashing to resolve this problem?