freemangordon,
here you refer to the google problem, or?
As I see the Nokia problem solved due to mixed up certs!?

I noticed that I can only get ACWP data, but not AGNSS data from Nokia server (also Vodafone). Should nokia provide that info also?
If yes, there is still above mentioned code chunk to be found (either for Google or Nokia).
Only thing I may think of causing this is some change in Google supl data still in the specification, but not correctly handled in N900 (like it was for tinymail).
Do you have another idea?

--edit
Okay, just reread.
And of course you refer with your code chunk to some problem in libmaemosec not handling the presence of two certificates with same fingerprint, right?
Nevertheless above problem with Google is still present, but not that urgent anymore (still I'd like to know/solve ...)

--editedit
Or, another thought:
could it be that Google changed their supl server to deliver only AGNSS data and no ACWP data anymore. And our N900 is only able to collect/use ACWP? This would explain the SSL-trusty successful (and bigger) data exchange with Google and Sirf supl servers.