I was looking at Zap2it and I noticed that for Sunday, June 10th 1 vs 100 is not listed for 12pm or 1am. Airing in its place is an hour of The 25,000 Pyramid.
I know that GSN started to air 1 vs 100 about three years ago, but on what day in June did it start? Of course, this could be wrong, but I think it might be accurate. If this is true, then it does look like they lost the rights to air 1 vs 100. I know it had a short run, but I liked the show and didn't mind it airing only on Sunday's. But 25,000 Pyramid replacing it is interesting. Hey, its another older show on weekends!