Tammi,
We have downloaded the Firefox DownloadHelper plugin that you suggested, it didn't seem to help much.
Anyway, I guess I miss understood some of what you said. It happens. I have had CW thread launch off the spool pin. Funniest thing I've seen in a while. I've gotten in the habit of keeping one finger on the top of the spool. Keeps it from bouncing around. And I wind my bobbins fairly slow.
Joe