We had the same problem a few months ago. Jetty claimed to have a patch on this but we could not get it working. We ended up changing to Tomcat 4.1.24, and the problem went away. Unfortunately that created a less obvious problem:
Every now and then, some of the (SSL) requests will have no response until more than 10 seconds later. The use of a network sniffer revealled that no data are being exchanged during that 10 seconds. We turned on all the jboss, struts, apache logs but nothing showed up. It seems like that everything just freezed up for 10 seconds. We are quite sure that this is SSL related because we could not reproduce the problem after switching SSL off.
Has anyone encountered the same problem?