Hello again, Since downloading the latest version of Audacity, there have been several times when the program has locked up, as it were, and my screen-reader, NVDA has frozen, effectively stopping me from functioning on the computer. I've had to force a shutdown several times because of this, and the last time it wouldn't work. I was previewing the "Noise Removal" effect that time, but other instances have included trying to slow a song down using the "Change Speed" effect. I can't remember what else I've done when this has happened. What have I been doing wrong to cause this to occur? Is this a bug in the current Audacity?