ABv10 Multi problem; backups quit connecting to Vault, Vault corrupt and credentials fail

Suddenly all six agent backups stop working, each one reports vault not available. management server has many errors in log file, one is Licenses server not available, another is vault corrupt, and then a whole bunch concerning the credentials fail, try to create new vault on a separate internal HDD and I get errors, here are examples of errors in the log file of the management server;
Type: Error
Date and time: 4/26/2010 12:13:48 PM
Backup plan: [None]
Task: [None]
Managed entity type: [None]
Managed entity: [None]
Machine: 52l02d1.xxxxxxxx.LOCAL
Code: 2,555,969(0x270041)
Module: 39
Owner: SYSTEM

Message: Failed to obtain statistics of vault 'arl:/C1D1DEE9-B702-40D7-95CF-9C65867EA7BD/E1BF8079-9AE8-4926-84C3-3CC9469A3F1A'
Additional info: Error code: 65
Module: 39
LineInfo: af0695fa9d427139
Fields:

Message: Failed to obtain statistics of vault 'arl:/C1D1DEE9-B702-40D7-95CF-9C65867EA7BD/E1BF8079-9AE8-4926-84C3-3CC9469A3F1A'
Error code: 4
Module: 117
LineInfo: f6ef68ff02640f23
Fields: filter : Acronis.StorageServer.LocationStorage.E1BF8079-9AE8-4926-84C3-3CC9469A3F1A
Message: Failed to enumerate credential '{0}' to the set of user credentials
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147943712
Message: A specified logon session does not exist. It may already have been terminated

Type: Warning
Date and time: 4/26/2010 8:10:50 AM
Backup plan: [None]
Task: [None]
Managed entity type: [None]
Managed entity: [None]
Machine: 460YSG1.xxxxxxxxxxxx.LOCAL
Code: 13,238,279(0xCA0007)
Module: 202
Owner: xxxx
Message: Cannot check the license key. Either Acronis License Server is unavailable, or the license key data is corrupt. Check connectivity to Acronis License Server and run it to manage licenses.
Additional info:
Error code: 7 Module: 202 LineInfo: ec81f6265c057b74
Fields: License : Acronis Backup & Recovery 10 Advanced Workstation, $module : C:\Program files\Acronis\BackupAndRecovery\mms.exe
Message: Cannot check the license key. Either Acronis License Server is unavailable, or the license key data is corrupt. Check connectivity to Acronis License Server and run it to manage licenses

Type: Error
Date and time: 4/26/2010 12:41:33 PM
Backup plan: [None]
Task: [None]
Managed entity type: [None]
Managed entity: [None]
Machine: 460YSG1.xxxxxxxxxxxx.LOCAL
Code: 14,286,850(0xDA0002)
Module: 218
Owner: xxxxx
Message: Failed to run the backup and recovery engine
Additional info: Error code: 2 Module: 218 LineInfo: 600f7166ce397ef2 Fields: $module : C:\Program Files\Acronis\BackupAndRecovery\mms.exe
Message: Failed to run the backup and recovery engine

Type: Error
Date and time: 4/27/2010 1:33:05 PM
Backup plan: [None]
Task: [None]
Managed entity type: [None]
Managed entity: [None]
Machine: 52l02d1.xxxxxxxxxxxxxxxx.LOCAL
Code: 2,555,960(0x270038)
Module: 39
Owner:
Message: Failed to add vault 'ACRONIS BKUP V2'.
Additional info:
Error code: 56
Module: 39
LineInfo: af0695fa9d427024
Fields: $module : C:\Program Files\Acronis\StorageNode\StorageServer.exe
Message: Failed to add vault 'ACRONIS BKUP V2'Error code: 44
Module: 39
LineInfo: bf04567890123241
Fields:
Message: Failed to create vault 'ACRONIS BKUP V2'
Error code: 2
Module: 117
LineInfo: f6ef68ff02640f56
Fields: targetName : Acronis.StorageServer.LocationStorage.95F43E5D-80B8-4AC7-99A2-B1D093000747, type : 1 Message: Failed to write credential '{0}' to the set of user credentials
Error code: 65520
Module: 0
LineInfo: bd28fdbd64edb8bc
Fields: code : 2147943712
Message: A specified logon session does not exist. It may already have been terminated