Rails - Jun 2006 - Webrick & Internet Explorer... timeout POST issues?

I am using IE 7 beta2... but I have tested this with previous IE 
versions (6+) and get the same results... both FireFox and Opera work 
fine.

My app does a search (POST), then I click on a record (GET), but if I 
hit the BACK button my app breaks because IE tells me that the web page 
has expired. I can click on RELOAD, it will ask me to send the POST 
request again, I do, and everything is okay... until I navigate through 
my site again.

Is this a conflict with Webrick and IE? Is IE timing itself out somehow, 
is Webrick timing out IE or are FireFox and Opera just pushing cached 
pages back to me instead of trying to reclaim the session? I''ve looked 
around for answers, but can''t come up with anything. At first I thought
it was just a general timeout issue but then why do FireFox and Opera 
work okay? (other than the obvious reason that IE is junk) Any help 
would be great.

I have already tried changing IE''s caching method, no effect. Unchecked
''Do not save encrypted pages to disk'' (even though my page is
no
encrypted... IE told me to do it) So far no luck

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