I faced problem at my customer web application. At application user can upload csv file using java applet and the application will calculate the checksum of uploaded file. Previously i already fixed this issue for Internet Explorer by applied Java Access Policies.
Here i attached some pictures
Internet explorer using SA:
when i uploaded file, bottom field will give the checksum value
Java console log for Internet Explorer :
Firefox using SA :
when i uploaded file, bottom field didn't give the checksum value
Java console log for firefox :
when directly accessing the application without SA, firefox or IE didn't faced this issue.