In Excel 2007, Windows 7, if I print a sheet, if have to click on the sheet before I can do any action in Excel.

E.g., if I print and then start typing nothing happens (and there is no cell with the highlighting outline). I have to click on the sheet to activate. If I Alt-tab, there is a blank tab showing which I presume is the print dialog. If I change printers, this doesnít happen, nor does it happen in Word, nor does it happen with other computers.

I have reinstalled the printer driver and this didnít help.

Suggestions?
Thanks.