Ditto here. I work 10 hours per week (sat & sun) since May 2008 - prior to that I was on 40 hours per week. Therefore I was able to claim JA for the days I didn't work.
That was reviewed in April, and I now have a letter from SW saying that I no longer qualify, as my working week is considered to be 2 days per week and not 5 - not for the want of trying to get other work in the meantime.
So now I have to live on €420 per month salary, plus €360 from lodger. I'm finding it impossible to pay bills and am in horrendous debt.
Letter says I can appeal the decision, but I assume there is probably no point.