Unable to create domain - unable to delete domain

[Bill007]

Fedora core 4 pleask 8.0.1 amd 64bit

if I try to create a domain I get an error Such DNS already exists.

If I try to delete a domain I get:-

ERROR: PleskFatalException


Unable to remove hosting: Unable to delete system user: SysUser->systemRemove() failed: usermng failed: usermng: Unable to set quota for user 'testweb7'

--------------------------------------------------------------------------------

0: /usr/local/psa/admin/plib/class.PhDomain.php:228
PhDomain->reset(integer '0', boolean true, boolean false)
1: /usr/local/psa/admin/plib/class.BsDomain.php:289
BsDomain->reset(integer '0')
2: /usr/local/psa/admin/plib/class.BsDomain.php:283
BsDomain->delete(integer '0')
3: /usr/local/psa/admin/plib/class.BsDomain.php:524
mdeleteDomains(array)
4: /usr/local/psa/admin/plib/class.Manager.php:351
Manager->removeDomains(array)
5: /usr/local/psa/admin/htdocs/domains/domains.php3:215


I cannot set quaotas as well. I have checked disk sizes - fine.

There is an error on boot up with init.d - might be a hard disk problem?
Please has anybody got any suggestions