Will give this a try on 3G today.
I have been wondering for some time now, and I'm hoping the people who view this thread would probably have experience in this field and know the answer. I have probably 8 or 10 different apps that in someway incorporate the use of Google maps (satellite view). They all have the option the cache map data, so I don't keep re-downloading often viewed map areas. Do Google map caches, go to a single cache area, to be used by all programs...or am I saving the same data 10 times over on my phone, separately for each app? It seems like my memory is filling up faster than it should be, and I'm thinking this is the culprit??