I started using an O2 Mobile Broadband dongle last month and since then, I have been having a few issues with my Powerbook G4 12". The battery is ridiculously drained now, lasting maybe 30 mins unconnected to the cable (even less with the dongle plugged in - 15 mins at most.) and will auto shut down even when the battery level is around 40% remaining. And when it shuts down, upon restart the time and date are set to Midnight, 1970. I've looked at my energy saving settings incase something had changed there but it hasn't. Anyone have any advice?