[GENERAL] VACUUM Error

[Hoosain Madhi]

I tried to vaccum a table but get the following error :

NOTICE : Child itemid in update-chain marked as unused - can't continue
vc_repair frag.
VACUUM

What is the problem, and how do I over come it??

Thanks 

Hoosain Madhi   
Bsc. Engineering Elec.
Switching Engineering
VODACOM CORPORATE PARK
Tel     :       +27 11 653 5030
Fax     :       +27 11 653 5941