Just gone to restore an earlier version of a commonly edited Excel file and noticed the file history date & time are wrong. Date is 18th June 2013 and this file was edited within the last 15 minutes:
However, file history shows a completed different date & time, even for the current version:
I’ve checked the time on the Linux server and that’s spot on. I’ve just created a test document and the file history is correct, i.e. it shows today’s time and date.
So it only appears to be occurring with existing/long standing documents. Will keep an eye on this.