Improve handling of bad stats.usr
Kerio Connect seems to often get confused with user quota info. Message counts and space use are reported as very low, when they could be very high.
The current fix is to stop the mail server and delete the stats.usr file for EVERY effected user. YUK!
If the system cannot automatically check and repair these files periodically, then there should at least be a means to rebuild the file from the web GUI.