Calling the createUUID function multiple times under load in Macromedia ColdFusion MX and higher can cause the Windows system clock to accelerate. This is an issue with the Java Virtual Machine (JVM) in which Thread.sleep calls less than 10 milliseconds (ms) causes the Windows system clock to run faster. This behavior was originally filed as Sun Java Bug 4500388 and has been confirmed for the 1.3.x and 1.4.x JVMs.
Options available to ColdFusion developers are listed in the TechNote below:
ColdFusion MX: CreateUUID Increases the Windows System Clock Speed