I'm in the same boat ATM. Just got my Defy+ on the weekend and just got a notification that my data usage has reached 700MB(1GB limit). I turned off data so hopefully it won't go any higher.
I have only installed 4 apps and seems the phone is forever updating things.
Is there a way of seeing which app or process is using the data?
Also there is an option to delay updates until you can access a wi-fi network. How does this work? I can connect to my home network(well it tells me I'm connected but I don't know what that lets me do).
When I'm connected to home wifi, do I download the updates and the data usage goes in as home usage rather than phone plan usage?
Also, even though I have wifi, bluetooth and gps turned off my home network tells me I'm still connected to it.
I'm feeling like putting the sim card back in the old brick