After hours of testing I now have a repoducible problem.
Is anyone out there using Wayfinder 7 on an E90?
The problem is easy to describe:
Wayfinder 7 works fine the first time you use it after powering on the phone, for hours and hours. If you exit Wayfinder and try to restart it it always fails to find a network connection.
The phone itself has no problems using WAP all the time. the only solution I have found is to repower the phone.
Any help/suggestions?