  A search for production of supersymmetric particles in final states
containing jets, missing transverse momentum, and at least one hadronically
decaying tau lepton is presented. The data were recorded by the ATLAS
experiment in sqrt(s) = 7 TeV proton-proton collisions at the Large Hadron
Collider. No excess above the Standard Model background expectation was
observed in 2.05 fb-1 of data. The results are interpreted in the context of
gauge mediated supersymmetry breaking models with Mmess = 250 TeV, N5 = 3, mu >
0, and Cgrav = 1. The production of supersymmetric particles is excluded at 95%
C.L. up to a supersymmetry breaking scale Lambda = 30 Tev, independent of
tan(beta), and up to Lambda = 43 TeV for large tan(beta).
