I had Windows 7 and Ubuntu 10.04 working in prefect harmony on a dual boot system, where Win7 was the default OS. This was until I let Ubuntu upgrade itself to 11.04. Ever since that, the default OS is now Ubuntu. I entered Startup Manager from Ubuntu and changed the default to Win7, but still - effectively whenever I reboot Ubuntu starts up. When I enter Startup Manager again it seems as if Win7 is the default...
What should I do?