First, some background.
We developed a Library Management System called Metamarc and use Java WebApp for the Circulation module.
This has been running successfully since Java 1.3 and up to Java 6 Update 17.
However, since Java 6 Update 18, the module does not work correctly, as illustrated in the attached document with screen captures of the correct operation with Java 6 Update 17 and the incorrect operation with Java 6 Update 18 and later.
We have been trying some some time to get an answer to this problem, but the purchase of Sun by Oracle has not helped.
We would be pleased to receive information on the changes in Java 6 Update 18 (and beyond) that could cause our WebApp to malfunction.
Thank you for any assistance.