Thanks for the reply .... deep breath
Well there must be some fault that causes this because;
1 - Australian customers are complaining that they cannot see all the shop products and then when I have checked with them the default localization has switched to International without any changes on their part.
2 - I visit my store front one day and its defaults to Australia and the next day (after a OS visitor has manually selected International) the shop defaults to international for me without any changes on my part.
Today its been all over the place for me I have disabled and re-enabled the International localizations several times trying to get it to reset the default to the default setting. The actual default in store front has swung between all three localizations regardless of the fact that I have manually selected "Australia" and Australia has remained the default in the admin at all times.
I can say unequivocally it is not a local cookie as I have not manually selected a international localization, I have nuked my browser cache dozens of times today, I have tested the shop front on three separate PC's locally and I have asked two Australian customers to check their end (same result when checked at the same time).
Now after resetting the store front no less than 20 times, disabling and re-enabling International localizations several times, clearing the shop cache, adding products to cart in Australian testing accounts and asking two Australian customers to manually select Australia in the shop front FINALLY this damn thing is defaulting to Australia when I or a customer visits the store front. Until the next time no doubt!
Couple this with the ongoing problems with Tag links and I am not a happy camper today.