When I boot up, I get a dialog box that says Vsheild.exe has performed an illegal operation. The dialog box can show details, but I don't undestand what it is telling me. I close the dialog box and procede. Then log on to my account, and I get the same message again. Again, I close the box and proceede. I have also been getting the same message periodically with Netscape, particulary with some plug-ins.