I activated a gold account medal about 2 p.m. on June 4, 2009 because I received a notice that my gold account had expired. It is now 4 p.m. and I still do not have my gold account even though when I activated it I was told that I did have it.
Found through the Useful Help Threads.
According to this, if it did not activate itself until tomorrow 2pm you should fill out a ticket about it. A UA will look after it to see what went wrong ^_^