Anyone know anything about this? nsWebShell::SetRendering gets called
by charset observer stuff, and calls
nsDocumentViewer::SetEnableRendering, which calls
nsIViewManager::Enable/DisableRefresh. This is not good; for one thing,
it disables refresh on the entire view manager tree, which is a problem
if this is happening on an IFRAME or something.

I'm wondering what would happen if I just removed it. It seems to me
that in most cases paint suppression would prevent anything bad from
being displayed between the initial load and the charset-detection
reload.

Rob

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