Fix DBNETLIB General Network Error

I have a friend at another company that is getting this error:

03/07/2007 16:03:49 Version 21.00.69 - UID - xxx - Error -2147467259 - [DBNETLIB][ConnectionWrite (send()).]General network error. Check your network documentation.

I have checked around and found two potential fixes for this problem. The first one describes this as a problem specific to the Named Pipes protocol. The fix is listed as available from this site:

http://support.microsoft.com/default.aspx?scid=kb;en-us;827452

The second fix is listed as making an additional entry to the registry like this:

The problem arises on a busy SQL system and some requests will randomly seem
to be dropped with a General Network Error.

To fix:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\Tcpip\Parameters
Add a new DWORD key SynAttackProtect with value of 0. Restart server.

Can someone tell me if either or both of these approaches is correct?

I guess I will be trying the registry fix.