I am going thru my system and come across this in the Management console.

Product: Windows Operating System
ID: 4226
Source: Tcpip
Version: 5.2
Symbolic Name: EVENT_TCPIP_TCP_CONNECT_LIMIT_REACHED
Message: TCP/IP has reached the security limit imposed on the number of concurrent (incomplete) TCP connect attempts.

This isn't the only readout; there are numerous, numerous entries to this effect. Could they be playing a part in some slow connections.
Could users using outdated LimeWire programs be slowing down the network.