I built a little .NET 2.0 Winforms frontend for my brute-force Sudoku Solver, and played around with hosting it inside MSIE. In case you are using MSIE and have .NET Framework 2.0 installed, you can give it a try here.
This is how it looks like:
Weird, isn't it? What is that, the Black and White Look & Feel? When running as a standalone application (download link), of course everything is just fine:
I have seen the same effect on other sites as well. Maybe that's Microsoft's way of visually marking MSIE-hosted .NET applications. Won't be too beneficial to the success of that approach I am afraid.
BTW, the Sudoku puzzle you see here is somehow famous for its problem depth. I compared the 62ms it took the algorithm on my old 2.4GHz Athlon to find the solution with other brute force Sudoku solvers, and it came off quite well in comparison.