Since I had my Vista Small Business reinstalled, Excel is closing down and sometimes restarting again. Sometimes just closing down. After it has reopened automatic I can close without problems. The closing down also often happens upon opening a new Excel page when Excel is open. See attachment. I have complained to the company who did the reinstallation but the claim that it is a Microsoft probloem which has nothing to do with the reinstallation. I have reinstalled Office Enterprise 2007 with no effect. When the problem started I received a message from HP that it was due to selecting the Printer HP Photosmart C5180 as default. I have tried to make another printer default but it has no effect. The computer is a Lenovo Think Pad T-61.