Quickseller has a negative trust on Lauda from February.  Quickseller gave negative trust to Lauda ages ago, and it's pretty much irrelevant what he does now.

The reason why you didn't notice that earlier trust rating is because no one actually cares about it.  Whether or not you support the way that the DT system is set up, you pretty much have to admit that an account looks fine with mixed feedback from non-DT members.  People who are trustworthy tend to have a lot of negative ratings from non-DT members as well.

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As for shorena, I won't make a judgement on whether that's valid.  It would be less annoying if they'd just decide whether or not to leave negative feedback and just leave the feedback as it is though.  Their new trust rating isn't showing any more information than the information that has been accessible to us since January.