Have a look at http://research.microsoft.com/pubs/69394/p309-fisher.pdf http://research.microsoft.com/pubs/69394/p309-fisher.pdf - you are not alone, it is know

Have a look at http://research.microsoft.com/pubs/69394/p309-fisher.pdf http://research.microsoft.com/pubs/69394/p309-fisher.pdf - you are not alone, it is known behaviour (though a minority seems to do this). I also never saw what archiving an email should achieve. Having it unread is archived enough.