Plugin w/IIS and 'No more connections in the pool' msg in logs

I am using the proxy plugin with IIS 5.0. Its fronts 2 weblogic instances that require sticky as there is session information that is not replicated (too large to be replicated).
I am seeing occasions when the request is suddently sent to the wrong server, which of course causes application failure, since the session does not exist there. Whenever this occurs I see the following message in the proxy plugin log (with DEBUG on and set to ALL).
Note: This request occurs less than one second after previous requests from the same client so there should not be timeout related issues.
I would really appreciate if any knows why the 2 logs entries below exist, what they mean, and what could be the cause:
<p>
<i>
Wed Aug 31 16:09:02 2005 getPooledConn: No more connections in the pool for Host[sasuprdcce03.cce.hp.com] Port[12302] SecurePort[12302]
<br>
Wed Aug 31 16:09:02 2005 Connection refused, error = 10022</i>
<p>
The server was in fact up and processing requests and was not backlogged, and the proxy did actually immediately reconnect for the same request:
<p><i>Wed Aug 31 16:09:02 2005 general list: created a new connection to 'sasuprdcce03.cce.hp.com'/12302 for '/impressions_wtp/images/menu_tabs/tab_top_right.gif', Local port: 4427</i>
<p>
However, when the new connection above occurs the Cookie has changed.
Thank you,
Darryl

Did you find a fix for this issue?

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