I tried the 98 shutdown patch and it worked a treat for me. Also, are you running Active Directory Services on your Win2k server? If so, make sure you install the dsclient.exe (which can be found in \clients\win9x folder on the win2k server cd) on your Win98 workstations. This is basically and updated version of the Microsoft Client for Microsoft Network with support for Active Directory, which Win98 has no native support for. I had loads of problems with my 98 machines and this update cured it. Only install it if you are running Active Directory though