Well, I searched for you and this is what I came up with:
[Start] [Run] [Regedit]
Registry Key: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: REG_DWORD [Dword Value] // Value Name: MaxConnectionsPer1_0Server
Setting for Value Data: [0000000a]
Modify/Create the Value Data Type(s) and Value Name(s) as detailed below.
Data Type: REG_DWORD [Dword Value] // Value Name: MaxConnectionsPerServer
Setting for Value Data: [0000000a]
Exit Registry and Reboot
I don't know what you changed, so hopefully by looking at that you can tell.
This is another thing to checL:
Open Internet Explorer, Tools, Internet Options. In the Advanced tab,
uncheck the option "Reuse windows for launching Shortcuts."
If it is unchecked, try checking it and see if it does any difference.