Does the Canon 17-55mm f2.8 IS USM Have a Design Flaw? (Canon 550D T2i 600D T3i 60D 5D 1D 50D 40D)

Does the Canon 17-55mm f2.8 IS USM Have a Design Flaw? (Of interest to Canon 550D 600D 60D 5D 1D 50D 40D 30D 20D 5D MkII 1Ds MkII 1Ds MkIII 1D MkIII shooters)