Error handle while try to remove SSP

"The snapshot directory does not exist or is not properly configured."

Occasionally, it happened when I tried to delete SSP in SharePoint farm for verify a disaster/recovery procedure. The SSP can not be deleted successfully and not any changes even delete more times.

I then searched from microsoft and internet but get nothing back. What's the snapshot directory ? The error description looks weird and unreachable by internet.

By checking 12 hive logs, get "Delete site operation cancelled by user. Check the log files for additional details. " Hence I tried to delete the SSP host web application manually first and then go on delete the SSP. It worked then.