The ISEQ index of Irish shares was valued at 2,387.11 at 11am this morning.
This represented a fall of 41.92 points, or 1.73%, in a relatively quiet morning's trading.
All of the major banks were down. AIB fell 5c to 79c, Bank of Ireland dropped 4c to 60c while Irish Life & Permanent was down 3c to €1.61.
Elsewhere, major gainers were very thin on the ground, with Dragon Oil, up 6c to €2.56, the most impressive performer.
Fears about swine flu contributed to Aer Lingus and Ryanair both losing ground, down 12c and 14c to 57c and €3.16 respectively, while Paddy Power fell 81c to €13.43, with Aer Lingus's announcement of a 16% drop in revenue also contributing.