My apologies for the site being down this long. My provider decided to upgrade to .NET Framework 3.5 and i had to acquire a VS2008 environment before i could repare the site again.
The good news is... sudokupower is recompiled to .net framework 3.5 and is working again.
I've tested the core, and the Sudoku playing seems fine. Not all links are working however. I will fix this as soon as i have some time to do so. Enjoy your visit on Sudokupower.