[Users] OpenVZ quota problem

[José David Bravo Álvarez]

Hi all,

Well I have this problem with two differents servers, my kernel is: 
2.6.8-022stab078.14-smp

I have working the quotas but some day the quotas don't work. And I 
can't create users using cPanel or DirectAdmin.

Sometimes I fixed it doing that:
vzctl stop VID
vzquota drop VID
vzctl start VID

But now does not work. I don't know what more to do.

Thanks