JVM keeps on initializing

Since a couple of days the Java Virtual Machine one of our machines keeps on initializing, as you can see in the log below. Restarting the HTTP task doesn’t help. Rebooting the server luckily does seem to help.Does anyone have any idea what could cause this?

14-03-2005 16:50:21 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:22 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:23 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:24 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:25 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:26 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:27 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:28 JVM: Java Virtual Machine initialized.

14-03-2005 16:50:29 JVM: Java Virtual Machine initialized.