Just found this out thru trial and error and want to pass it on to you folks
I love/loved Accuview as a widget on my N97 ...Great to have local and overseas weather forcasts.
I started having problems with gaining initial fix with Nokia maps not working for ages, I could not work our was was wrong.
Accuview has an option to track down the local weather based on your GPS Location but tries to do this by default. It appears that this causes a conflict with the  Nokia Maps GPS application.
Option 1, go into AccuView and manually load your city
Option 2, Remove Accuview as a Wiget, you do not need to remove the program, just remember to close the application before using Nokia Maps. (I've taken this option)

Im thinking this would also cause conflicts with any other applications with GPS that you might have open as a widget on the N97 home screen

I have disabled A-GPS now to save on data charges and also see how long it takes for a hot fix or cold fix over the next week or so. At the moment it's 6 seconds on a hotfix