Yep, last night it took over 15 minutes to get the first fix in an open area, with overcast clouds
I used AndroiTS GPS Test, and it seems to get GLONASS sats, but never uses them. Then after 5-10 min, the normal GPS sats kick in.
I'll try reflashing a wiping again, see if that helps.
Logcat seems full of LocSvc_adapter and LocSvc_eng errors