network issue running application
 

Hello community :)

I've got an interesting phenomenon:
I'm downloading mobile google sync for my blackberry from through direct internet connection - no Blackberry packages. APN registred correctly (I'm able to surf).
First time I'm running the application "Google Sync" everything works fine and the synchronization is able to finish successfuly. Closing and running the a second time it works fine too.

leaving the blackberry without any interaction and trying to resynchronize a few hours later, the synchronization fails due to network failures. Google Sync is not able to find the gateway...

Do anyone has some solution for this issue?
pmb µatthias