Can't delete a user - sys_command error

[cwigham]

When I try to delete a user it doesn't fully delete, it just stays there in the list with the red circle beside it, then when I try to delete it again it says wrong domain ID, when I try to switch to the user it says I don't have permission to view the interface or user doesn't exist.

In the ispcp debugger I get the following:

domain.com - Set status to 'change'
sys_command() | ERROR: External command 'rm -rf /var/www/virtual/domain.com' returned '1' status !

On debian

version:

ispCP 1.0.5 OMEGA
build: 20100331

Appreciate any help
Thanks