Can anyone give me some reasons as to why this may happen?
It's very odd, everything runs fine except for Google Maps or any webpage with a Google map on it. I get the spinning multi-coloured beach ball and usually have to restart Firefox.
Mac OS X Lion and Safari running on a MacBook Pro.
Try another browser is the first thing I'd recommend, I use chrome on my 200 macbook running snow leopard, out preforms Safari in Every aspect. Google Maps is slow to load on mine but It's just due to the age. But it loads faster on Chrome than on Safari.
Hi mate, I used to get exactly the same thing on my macbook air. When the OS patch came out (I forget which one), it fixed the issue. So if you haven't tried already, worth updating to the latest OS (Mountain Lion)