Wrong Close time

[HervE]

Hello,

I am using Stats to display 'Close time' and find some strange figures in this field!

For instance, I closed a ticket on 22/06/2011 - and this is what I see in 'Changed' field - but 'Close time' field is 17/07/2011 00:00:02!
Of course nobody was in the office at that time! (And no pending auto close was set.)

Moreover, I'd like to use SolutionTime or SolutionTimeWorkingTime, but these fields are empty: how to have them filled?

Regards,
HervE