You are using a deprecated Browser. Internet Explorer is no longer supported by Xilinx.
2.1i FPGA Editor - Selecting Virtex switch box pins sometimes highlights the pins next to them
Keywords: select, switch, box, Virtex, pin, wrong
Clicking near the right hand side of one of the pins sometimes selects the next pin to the right.
Try to click exactly in the center of the desired pin.
This will be fixed in a future software release.