Terminal content remains on screen without being 'refreshed'

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https://bbs.archlinux.org – I'm using Awesome wm and I get this weird terminal/vim behaviour.Basically it seems to not 'refresh' some lines of the terminal after a command - hence they 'remain' there and I literally have to 'overwrite' the content to remove it.Here is a screenshot - look at the last line in the terminal window. http://imgur.com/rywIJEfAny idea what is causing this? psycho_tea_drinker https://bbs.archlinux.org/profile.php?id=72811 2013-07-12T11:12:07Z (HowTos)