No relationship with US subprime loans, although there is an argument that giving 100% mortgages on eight times salary with self-certified bonuses and overtime and a top-up loan for fees constitutes our own version of subprime.
Anglo, though, has no residential mortgages. It is solely concerned with C&D (Construction and Development) and Commercial lending. The other banks also have some exposure to this. The belief in the markets is that the assets that underpin these loans are worth a fraction of the value they are being held on the banks books at. So, for example, all those sites in Dublin that sold for tens of millions an acre of borrowed money are not worth the money, nor is it likely that should they be built on the housing, office and retail units on them will be worth that amount either. Add to this the large amount of unsold/unlet housing, retail, office and undustrial units around the country and there is a bit of a pickle. The markets don't like pickles.
BoI and AIB also have an exposure to BTL (Buy to Let) investors both here and in the UK (never mind the apartments in Bulgaria, French leasebacks etc). Aside from the slide in sterling reducing the income from these properties, BTL investors are having to contend with falling rents on properties that didn't ever cover their mortgages.
Finally, with rising unemployment, even sensible-seeming lending has increased in risk.
Made in Ireland. Don't let anyone tell you its a foreign import.