lots of connections in close_wait state

[chrysalis]

I have just discovered I have a lot of connections in close_wait state, I mean a lot.

resource monitor shows a graph with a max value of 500 about 4/5 full so approx 400.

netstat -n which doesnt show all of them as it scrolls off shows the vast majority are close_wait.

the process name as shown in resource monitor is iexplore.exe, so this doesnt appear to be a generic problem for every connection but rather limited to IE, I am running IE9. Firefox also running on system isnt showing the same issue, as well as non browser apps such as securecrt and ftp client.

close_wait as understand it is supposed to mean the server has yet to close the connection. But this is where my investigation ends. I only found some misleading and wrong info on the net linking it to tcptimedwaitdelay (actually related to time_wait), and a network sharing bug which this isnt it as its from web browsing.

I dont appear to be exhibiting issues because of this and only discovered the issue by chance when I decided to check something with netstat. However it clearly isnt a healthy thing to have all these connections in the tcp buffers.

So if anyone has an idea whats up and how to fix I wouldnt mind the help please.

 

[chrysalis]

I believe I have found the cause but need to do more tests to 100% confirm, looks like a certian addon in IE9 causing it (cant say which due to forum rules).