You may have noticed an improvement in the speed of your Ultimate ISP Management and Billing software.  We recently altered the Ultimate ISP Software to allow for more efficient persistent connections. Some of these changes require Java 6. Read more here: http://java.sun.com/javase/6/docs/technotes/guides/net/http-keepalive.html
We are continuing to work on additional performance improvements that we hope to release in the coming months.