Hello,

1st post due to a problem I can't fix. I'll try to keep it brief.

Excel sheet (simple sheet, no formula or inserts although a large text box) created on Mac in Excel 2011 (365). Moved to a windows PC running XP & Excel 2003. Inserted into a wookbook of identical sheets. You can edit all the sheets apart from the inserted sheet which is slow to respond to commands, sucking up 100% of the CPU usage to complete the command - say 5 seconds.

Copied workbook to another PC running the same (XP & Excel 2003) and it works fine.

Would appreciate any comments.

Mark