[TYPO3] Backend timeout problem

[Ca Phun Ung]

I wonder if anyone has encountered this strange phenomenon...

I installed a fresh copy of TYPO3 4.2.1. When I login into the backend 
the following error message pops up:

"Login-error or session timed-out
No user logged in! Sorry, I can't proceed then!

(You must have cookies enabled!)

If your session has just timed-out, you may
click here to re-login."

So I re-login but the same message pops up. My local copy of TYPO3 works 
fine but this seems to happen every time on the remote installation.

Now the strange thing is my colleagues based in the other side of the 
world (UK) do not get this problem when they access the same TYPO3 
installation. I'm based in Hong Kong and the server is in the US. 
Additionally if I VPN into the UK Office everything works fine.

-- 
Ca Phun Ung

Web: http://yelotofu.com