Urgent help needed with gui

[II./JG1_Klaiber]

I've been having the same problem as Stormcrow, fruitbat, PissyChrissy and others. I have a clean install of the game, and am running an ATI 5870, with 8GB of Ram and Vista 64.

The only way around it is to hit Y and N for Yes and No, tabbing your way through things, and eventually, shutting down the game and restarting it.

Any advice would be greatly appreciated.