I was reading through the user interface guide and got to this tweak: Disk Cahe speed up which tells you tpo navigate here: [HKEY_LOCAL_MACHINESYSTEM/CurrentControlSet/ControlSession/ Manager/MemoryManagement/IoPageLockLimit]; Modify the value in Hex depending on the size of your RAM RAM: modified value(Hex) 64M: 1000; 128M: 4000; 256M: 10000; 512M or more: 40000. Reboot. i dont have HKEY_LOCAL_MACHINESYSTEM, and even when trying HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet the /ControlSession doesn't exist??????? WTF!!! any ideas?