to procházení sítě ve vlastnostech složky vypnout taky, ale pro jistotu zkontrolovat nastavení:

http://www.pctools.com/guides/registry/detail/56/ - Increase Network Performance and Throughput

http://www.pctools.com/guides/registry/detail/954/ - Enable the Network Adapter Onboard Processor

http://www.pctools.com/guides/registry/detail/255/ - Changing LAN Manager Authentication on Windows, pro XP máme v doméně "1"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
"lmcompatibilitylevel"=dword:00000001