I am running Win98. The PC in logged into a Novell 4.11 network, Lotus notes using TCPIP and a second AS400 using Client Access (TCPIP). When attaching or detaching files the PC locks up. the only thing that works is the mouse pointer and CTRL-ALT-DEL which brings up the task menu but will not accept any additional input from the mouse or keyboard. The PC has multiple drives mapped incl one on the AS400. Rebooting the PC will not clear the problem. Any assistance would be greatly appreciated.