vHost file auto changed after a period ???

[TGates]

First, its always better to start a new topic than to continue an old topic

If you didn't change anything, the first thing that comes to mind is make sure you have enough disk space. Your logs may be getting to large and eating it up. Some can be cleared out (/var/sentora/logs/sentora*.log) There are more, you can check the /var/sentora/logs/domains/[domainname]/ and see if any sites are creating too many errors (and fix them) so the error logs stay small.

I don't see how a vhost entry has anything to do with the database, so that shouldn't be the problem.