There is a good reason why these LCD's are so cheap, it's called component quality (or the lack of in this case). Somethimes it's worth spending a few quid more on something with a proper name and that is genrally of a better quality.
Since it came from Aldi's, it really doesn't surprise me it isn't a good monitor. =/
P.s. @ Cammy, as for your back-drops, rather nice but I don't think my fiancée would approve me using it on any of my machines.