After MDAC 2.8 - SQL with Named Pipes misbehaves

After installing MDAC 2.8 some stored procedures and some backup/restore stopped working and generates:
[Microsoft][ODBC SQL Server Driver][DBNETLIB]ConnectionRead (WrapperRead()).
Server: Msg 11, Level 16, State 1, Line 0
General network error. Check your network documentation.
If you register and/or use TCP/IP sockets, everything works fine.
Has anyone experienced this problem?
It sounds like you maybe running into the following problem:
FIX: General Network Error When You Try to Back up or Restore a SQL Server
Database on a Computer That Is Running Windows Server 2003
http://support.microsoft.com/default.aspx?scid=kb;[LN];827452
You can contact Microsoft Product support to get the fix.
Rand
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