I have exactly the same problem as audriskhong... Whenever I go to mobile.blackberry.com it doesn't recognise that I'm on my BlackBerry and says "The BlackBerry HELP! website is designed for use with the BlackBerry browser. Learn more about BlackBerry here."
I have tried every combination of Browser settings but it still won't work. Even when the Browser is set to BlackBerry.
I ended up getting live messenger by going to blackberry.com/livemessenger from my BlackBerry.
yes! i ended up going to that website too! maybe bcus we're from australia, ur using telstra? r u on plan? apparently i cant sign in to facebook n live messenger tho i succesfully downloaded only those 2 appli jus via wifi, wireless from my home.. is it bcus im not on plan? i use to be able to connect to inet via GPRS when i was usin O2