I'm in Prague at the moment and when I go to google.com (firefox FYI), it's converted to google.cz....sometimes helpful but mostly not.

Similar problem earlier this year in the BA club room in DME airport in Russia.
Someone before me had accessed yahoo.es (I think it was .es) and that always popped up whenever I tried yahoo.com or us.f542.mail.yahoo.com
And you can't clear the cookies on most lounge PCs'

Solutions?