Wow...you look like a progress fan! But, you might want to change your signature...it's a little too long in length.
As for Progress, it closed on October 22, 2001 (I think). We didn't know what was going to happen. For the next month and a half, I wrote and called Disney frequently...even a post I made on WDWMagic on that date was quoted in the Orlando Sentinel a little over a week later...I got a kick out of it!
In December, much to our pleasure, Walt Disney's CoP reopened for a bit over two weeks. Then, it closed, and reopened for President's Day Weekend. Then Easter...Grad Nite...and for nearly the entire Summer. Furthermore, it opened in Thanksgiving, and has done all of the above over again in 2003 thus far...and is currently open.
This is called "seasonal runs." They run the Carousel of Progress only when the park is extremely crowded (hence, the holidays).
There's a rumor that it may close after this year's Christmas run. If that is the case, guests will be EXTREMELY upset, and Disney may make one of its biggest mistakes yet.