Activision and id Software have issued a new patch for Quake IV, bringing the first-person shooter sequel developed by Raven Software to v1.0.5. The update is recommended for Windows users with Intel Hyper-Threading Technology (HT Technology) enabled processors, multiple processors, or systems with a dual core processor. The update is also required for Windows and Linux server admins as it addresses a recently identified problem with servers left unoccupied for very long periods of time (these servers will appear to be operating normally, but will crash clients that attempt to connect to them). id Software and Raven have worked with Intel to dramatically improve QUAKE 4 performance on systems with HT Technology, multiple processors, or dual core processors. Players who have a system with one of these configurations will notice performance gains in QUAKE 4 of anywhere from 25% - 87% depending on processor type.