I'm not sure if it is my imagination, or something in using flash 10.1, or related to the new 30-sec interval, or what else it could be, but I feel that I have been practicing my new characters over and over again, consistently getting them right, only to have them come up again some minutes later at 999% or after maybe 10-15 times right in a row an hour+ later at 500+%.
Definitely feels different (and repetitive), and my retention rate has jumped to close to 98%, which is one reason why I feel it's not all in my head.
This is on the old practice page btw.