Warning W234 - You are using a Hyper-Threaded system (HT/SMT) on an operating system (OS) that either does not support it or does not support the total number of logical processors of the system. Thus Hyper-Threading is not properly utilised. You may as well disable it.
Fix: Make sure you are using the right Hyper-Threading kernel or update your operating system for HT support (use Windows XP/2003 or later). Do note that some operating systems and software have licensing limits that may prevent you from using all CPUs or you may be in violation of your licence.
For more information, please see the (FAQ).