Bill,
What OS are you on. I had problems with Vault on AIX 5.3. yes, latest and greatest = pain! We had to get a patch from engineering, but my SE has recommended MP3a, if you are having problems with Vault. If you read the readme for 5.3 MP3a, you will notice there is a chace of data loss using Vault - check the scenario in the readme.
Just an FYI