We are aware of some issues going on with some of the websites, and Impulse. We are currently working on the problem, and hopefully should be resolved soon. 
Thanks for your patience and Happy Holidays.
Update (December 26th):
Downloads have been fixed, but as everything else is getting worked on there still might be intermidiate issues. Please check this thread for updates.
Update (December 28th)
Personal sites on WinCustomize should be working, but uploads are still down at this time