Dave - delete the Productstream service packs - according to your signature, you are running Vault 4.
You need Autodesk Vault 4 Service pack 2 for your Vault clients - found here:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=5783401&linkID=4517342
and Autodesk Data Management Server 4.0 Service Pack 1 for your Vault Server - found here:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=5596118&linkID=4517342
And the performance will blow your socks off - bring on the next service pack!
Peter
Peter