Sometimes it's your clients that are painfully slow to update. I know a client that (a few years ago), after a lot of issues and wasted time, we discovered that

Sometimes it's your clients that are painfully slow to update. I know a client that (a few years ago), after a lot of issues and wasted time, we discovered that they had a Sun JVM 1.5 with some bug on String.length ! And the worse thing is that they not like the idea of update to Java 1.7