Hello again, Suresh
Further on using Adagio alone and what is required for oplocks etc., but this applies more to Novell clients though than NT/W2K.
Apparently there is an option called File Caching that needs to be turned off in the Novell Client. Over the years, Novell has switched the default value of File Caching from OFF to ON to OFF and back to ON, depending on their release. (For the computer to work properly with the Server it is also important that you are running the latest version of Client 32 for your station's O/S.)
Windows 95 - requires V3.21
Windows 98 - V3.21
Windows NT - V4.72
Windows 2000 - V4.72
You can find out more about the File Caching option at www.cae.wisc.edu/facstaff/network/caching/c32_caching.html .
Hope this helps!