[E7] Automatic connections to the internet

Question

My E7 is connecting to the internet in regular intervals, although there should be no appearent reason. I am trying to keep all outgoing data connections to a necessary minimum, mainly to maximize the device's standby time. However, I cannot get rid of some automatic connections, thus I have no idea what processes or applications actually trigger them.
My device is set with the following configuration:
- RSS reader widgets are all removed
- RSS feeds seem to stay offline according to the update timestamp shown with each feed
- Widgets are set to offline
- Social 1.3b is installed, but does not seem to update status since only older status messages are shown
- mail synchronization is set to manual for all accounts
- Nokia situation beta was installed, but removed
- Skype, Nimbuzz and IM+ are installed, but not running
- WLAN monitoring is off
I have a couple of third-party applications installed as well of which none should be running. Is there any way to monitor the outgoing data connections? I.e. which applications are responsible?
Any hints are appreciated.
Robert

Answer 1

Here is the full official FAQ about this, it seems that there are some things in it which have not already been tested here:
Your Symbian^3 device establishes a WLAN connection automatically if there is an application requesting access to the network and you are under the coverage of a WLAN network which is defined in the destination settings of the device.
Usually the applications are connecting through the default Internet destination group. To see what access points you have in this group, select Menu > Settings > Connectivity > Settings > Destinations > Internet (or some other group, if it has been selected as the default destination).
If the destination group contains both WLAN and cellular access points, the switching between the access points can be controlled with the Menu > Settings > Connectivity > Settings > Switch to WLAN setting:
Select Known WLANs only to switch from cellular connection to WLAN connection immediately when the WLAN access point in the destination group is found. You can in this way save in the data costs that may be associated with the cellular data connection.
Select Manual to disable the automatic switching of currently active connection. WLAN access is established only if the user manually takes a WLAN connection in use or after the active cellular network connection is disconnected. Note that the WLAN connection is established automatically in this situation if a new connection is requested and the WLAN access point is the highest priority access point in the destination group.
If you don't want the WLAN connection to be automatically established, you can remove the WLAN access points from the default destination group:
Select Menu > Settings > Connectivity > Settings > Destinations > Internet.
Long press the WLAN access point in the list and select Delete or Move to other dest. (if the access point is in use and cannot be edited, switch the device first to Offline profile).
After removing the WLAN access points from the default destination group, the network connection will be established via the cellular connection (if defined in the destination group).
To prevent the automatic data connections to both cellular and WLAN networks, you can disable the automatic connections in the application settings. Depending on the application, this can be done e.g. in the following way:
Home screen widgets: Select Options > Widgets to offline mode.
Email: Select Menu > Applications > Mail > Settings and select Manual or a suitably long retrieval frequency in Retrieval frequency or Sync frequency settings.
Note that any applications running in the background may trigger the network connections to be established. Long press the Menu button to see the currently active applications. 
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