engine - 6:09 pm on Feb 22, 2011 (gmt 0)
I doubt it's connected, but i've seen some weird things happen when trying to log in. Suddenly, i'm redirected to a non-english language.
The only solution to stop that happening was to remove the cookies.
One other test to try: Look up your IPs to check they are showing correctly.
It does sound a little strange to be redirected to differing countries.