IE Bookmarks IFrame src issue.

A truly idiotic bunch at Microsoft must have decided this was a great
idea: If you open an IE Bookmark in a text editor you will see it
records an IFrame's src at the time the bookmark was created. When
using said bookmark next time around, IE makes a request of the
IFrame's src without even checking if the src for that IFrame has
changed in the newly requested page && so if and only if the
previously recorded src fails to load (either from cache or from
server) does it try loading the new src that the IFrame tag now
carries.

This is actually a major problem for our GWT web-app - as we release
every quarter and we employ GWT's 'perfect caching' strategy i.e.
cache policy of forever for all *.cache.* files. Both IE6 & IE8 end
up requesting and then loading from cache the older version of our
cache.html resulting in various incompatibility exceptions. For now
we just let users know to delete the bookmark and recreate it in these
types of situations.

Any help in fixing this issue would be appreciated. I've tried
replacing the iframe-linker with the cross-site linker which works but
then code-splitting is not supported (which we rely on heavily).

Thanks much
Sony

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