Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug #303140, so it is being marked as such.
The problem you were experiencing seems to be directly linked to this. It seems that your mail archive got corrupted somehow - the data 1970 means, that there is no date at all, and so the "point zero" of the unix time is used: Jan 1st 1970.
Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.
Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug #303140, so it is being marked as such.
The problem you were experiencing seems to be directly linked to this. It seems that your mail archive got corrupted somehow - the data 1970 means, that there is no date at all, and so the "point zero" of the unix time is used: Jan 1st 1970.
Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.