Weldment sketch keeps appearing in the part even after I have hidden it

Hi

I have just purchased Solidworks 2011 Standard, I have a problem that maby somebody can help me with, I looked through the forums but could not find any other reference to this.

When I create a weldment part and continue to build my part by adding more features every time the part rebulids the sketch of the weldment shape shows up and I have to keep hiding it, can anyone tell me how to stop this happening.

Thank You

Paul Cullen

SolidworksWeldments