Sorry but the sharing data box will remain like that. You mention bandwidth usage but sharing data, the bandwidth required for that is very low and you can switch it off per session.
The reason the box doesn't remember the details is:
1.) We fear that some customer could temporally untick the box and then forget they have unticked and hence never share. In turn lack of the data on the network which would affect not only us but also customers viewing the network data.
2.) Orginally a few customers said unticking the box gave them performance boost. This is now not the case and we had the same fear as above.
Hope that helps.
mdobuk21,
Can you confirm when you close RB after you change the map it closed down properlly, i.e no on screen errors. As the last map data is saved then. Also I would expect your using Vista, are you the admin and have you installed Vista to a directory outside your program files?