helper world consuming 50% CPU

Greetings,

I have a newly built ESX 3.5 Server running on a SunFire 40 Dual AMD Single Core system. I have zero (0) Virtual Machines running on it and noticed that in the VI Client that 50% of the CPU was being consumed. Delving into things further with ESXTOP I discovered that helper is indeed consuming 50% of the CPUs. Does anyone know what is causing this and how to make it stop? Or how to further troubleshoot the problem? With no VMs running it shouldn't be consuming 2 Ghz of CPU horsepower

Thanks in advance!

M