I have a problem since upgrading to 12.04, when I launch fullscreen wine applications (ive tried 8 different ones so far, all the same problem) the the top global menu bar (with the time and date on it) still shows and i have the unity bar down the left hand side still.

This makes games unplayable, does anyone know a work around for this?

It's the same problem this guy has:

http://www.playonlinux.com/en/issue-828.html