Netware Disk Space

My question here is that My Netware Volumes
just keep on filling. Although I keep on running purge all the time but still they constantly seem to be filling. The intersenting part is that the directory entries shows that I have 92% free space and only 8% used while the disk usage shows that I have used 89% of the total space and only 11% is free. Can anybody tell me whats wrong here and how to solve this problem.

Thanks
Jasjeet Singh