having the same/simlar issue on my 7520 after rebooting the will hang on the NEXTEL screen though if you press the
and ESC it will come off the nextel screen where they normal desktop is and go to the taskbar but as soon as you selcect something in the taskbar its back to the NEXTEL screen. this is turning into a real issue as I install software and as you know most installs require a reboot which means i cant install at work due to being down for long periods of time.