Did the TT values for a correct problem change?  I noticed that I'm getting much less for a correct problem in the 90% range than I used to; 10 to 15 points, where previously it was 20 to 30.  Could just be me, I suppose.

A.

Following up, the values of the problems are still being adjusted by the traditional amounts of 20, 30 and 40.  Interesting discrepency.

A.

I am new to the site so I could be wrong but the impression i was under is that TT uses a glicko rating system. If that is the case the more often you do problems, the rating change will become less and less for passes and fails.  The puzzle would also have the same rating system so it would depend on how many people lately have done that puzzle to determind how much or little it will get affected.

Scoring does indeed seem to have suddenly changed. I have being using TT for months and you would always get around +30 for 90% score and getting first move wrong always cost 30-45 points.. Now scoring adjustments seem to be half what they used to be. (An improvement in my opinion as previously score could fluctuate wildly by several hundred points)

See here:

http://www.chess.com/forum/view/help-support/new-calc-method-in-tactics-trainer

Thanks DeepGreene.  Glad to know I'm not crazy.