I have a constant crash of the application when it checks bluetooth.
I have to say that bluetooth on my n900 has problems: since weeks it does not activate without any notice of the failure. The only hint about a problem is when I start fm radio, because it says "cannot activate bluetooth/fm combo chip"...
I hoped your app could help me to determine if the problem is software or hardware related, but healthcheck crashes always. I started the app from console and this is the error message:

** Starting Bluetooth Service
Can't get device info: No such device
Traceback (most recent call last):
File "/opt/healthcheck/healthcheck.py", line 1408, in <module>
ui.updateAll()
File "/opt/healthcheck/healthcheck.py", line 1252, in updateAll
self.updateBluetooth()
File "/opt/healthcheck/healthcheck.py", line 1036, in updateBluetooth
self.listWidget2.addItem("Bluetooth MAC \t" + s[2].strip())
IndexError: list index out of range

Hope this could help make your app better!