SYMPTOMS On a Windows 98 Second Edition-based computer that is using networking software that is implemented as a Network Driver Interface Specification (NDIS) intermediate driver, one of the following symptoms may occur: The computer may stop responding (hang) during startup or shutdown. Your network throughput and overall network performance may gradually decrease, sometimes to the point that the computer hangs or becomes completely unresponsive to network requests. NOTE : To more effectively search the Microsoft Knowledge Base, use keywords that relate to your issue when you search. If you are searching for troubleshooting information that is not referred to in this article, please try searching the Microsoft Knowledge Base again by using keywords that are listed in the following Microsoft Knowledge Base article: Q242450 How to Query the Microsoft Knowledge Base Using Keywords CAUSE This problem can occur if the NDIS intermediate driver code is preempted by the operating system when it is not safe to do so. As a result, a "race" or "deadlock" condition may occur, causing the operating system to hang. RESOLUTION A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article and should be applied only to systems experiencing this specific problem. To resolve this problem immediately, download the fix as instructed below or contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/directory/overview.asp NOTE : In special cases, charges that are normally incurred for support calls may be canceled, if a Microsoft Support Professional determines that a specific update will resolve your problem. Normal support costs will apply to additional support questions and issues that do not qualify for the specific update in question.