CSNW constantly resolves printer names, server names, and object properties. The more clients that connect, the more activity.
Upgrade to Service Pack 6 (SP6).
Use Regedt32 to navigate to:
Tune the following values:
|Value||Type||Dflt||Min.||Max.||D e s c r i p t i o n|
|NdsObjectCacheSize||REG_DWORD||0x0||0x0||0x80||The number of resources to cache. Set it to the number you are connecting to.|
|NdsObjectCacheTimeout||REG_DWORD||0xa||0x0||0x250||The number of seconds an entry is valid for. Set it based upon how often the resource can change.|