@jamesthomson Reminds me of that time I thought none of my apps had crashed for weeks.
Customer: "We [App Store buyer] are the same users who have paid the same money as buyers on the site, and have the right to timely update."
@Schwieb It's been happening for me with Excel 2011 (14.1.3/110805).
@JeannieRichard Numbers does not do that. Excel does not do it for xlsx files (but everyone sends me xls).
Did you know that Microsoft Excel modifies every file when you open it, even if you don't save changes? http://t.co/vfQQTwxD