Hi,
We were experiencing the same problem, adding shared=true to the web-app
tag in your web-site.xml file solves the problem. There appears to be an
issue with browsers (IE?) tracking and maintaining SSL sessions correctly.
I've no doubt someone better informed than me can fill in the details!
Just picking up on Scott's request... the change to using
copy-by-value=false gave our application on average a 20% speedup. The
application only uses Remote interfaces at present. The testing was carried
out using JUnit+HTTPUnit to execute multiple passes of our regression test
suite (500+ tests