Comment 45 for bug 91759

I think it should be possible to use the InteractionHandler passed to the import/export filter to ask a "continue/abort" question whenever the import/export exceeds a predefined timeout, and I'm going to try to add that to the libxslt based xslt filter (because I know there's a thread started there doing the actual transformation, which I could watch and interrupt if necessary). Actually I think this could and should be done centrally, applying to all IO or at least to loading and saving any kind of document, but that's currently beyond my capabilities.

That wouldn't improve importing the file attached to this bug, but would generelly prevent data-loss caused by broken filters.