Symptoms
Under rare conditions where connections concurrently modify and read data on a particular page, a query that performs a range scan on the page may return rows that do not qualify for the specified range. The end result is that a query may return extra rows that should not qualify for the query.
This problem may affect the distribution agents in transactional replication. When the Distribution Agent receives unexpected rows while querying the MSrepl_commands table it causes an access violation (AV) exception in Distrib.exe that shuts down the agent. The following text may appear in the ReplExceptDist.log:

Microsoft SQL Server Replication: Exception Stack Dump…An exception was caughtin DISTRIB.EXE* Exception Address = 7801166c* Exception Code = c0000005********************************************************Module Name Return Address LocationMSVCRT 00403a45 wcsncpy + 14distrib 0040104c 00403a45distrib 77e97d08 0040104cKERNEL32 00000000
Resolution
To resolve this problem, obtain the latest service pack for Microsoft SQL Server 2000. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
290211?(http://support.microsoft.com/kb/290211/EN-US/) INF: How to Obtain the Latest SQL Server 2000 Service Pack
HotfixNOTE: The following hotfix was created prior to Microsoft SQL Server 2000 Service Pack 2. The English version of this fix should have the following file attributes or later:

VersionFile nameDescription————————————————8.00.468Sqlservr.exeSP1-based hotfix Hotfix build 468 is designed to be applied to a server that is running SQL Server 2000 Service Pack 1.
NOTE: Due to file dependencies, the most recent hotfix or feature that contains the preceding files may also contain additional files.