Re-configuring the had helper account on the secondary node was successful (hadhelper /config), but the same errors were generated in Lanman log.
Switching Service Group to primary was successful.
Re-setting all attributes to "False" on Lanman works fine, and the Service Group comes online on both nodes.
Extract from Lanman log:
2010/09/14 14:21:02 VCS ERROR V-16-10051-3007 Lanman:MDTC_SG-Lanman:online:Failed to update computer Account in Active Directory (error_type:2, error_code:0x0000522)
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:*** Start of debug information dump for troubleshooting ***
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Listing resource (MDTC_SG-Lanman) attributes:
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_VirtualName = MDTC_SG
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_IsMultiNet = 0
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:ipAddress = 10.1.77.7, 0x074D010A
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:subnetMask = 255.255.255.240, 0xF0FFFFFF
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:numMultiNet = 0
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_IsUpdateDNS = 1
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_IsUpdateAD = 1
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_IsDNSCritical = 1
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_IsADCritical = 1
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_ADContainer = OU=Virtual Servers,DC=domain2,DC=local
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Number of DNS options configured 0
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Number of additional servers specified = 0
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_AliasName is empty
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_TsipKeyFile is empty
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:m_Ttl = 0
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:(2) CRegKey::Open failed for Software\Veritas\VCS\BundledAgents\Lanman\__Global__.
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:(2) _GetDWORDValue failed. Subkey = Software\Veritas\VCS\BundledAgents\Lanman\__Global__, Name = SkipLSASSPatch
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:hadhelper PID = 1532
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Netbios(NCBASTAT) returned 0x00000005
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:AdapterStatus() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:AdapterStatus() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:nb.CheckForDuplicate() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Netbios(NCBASTAT) returned 0x00000005
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:AdapterStatus() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:AdapterStatus() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:nb.CheckForDuplicate() returned 2, 0x00000839
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Querying DNS Entries for MDTC.domain2.local in 10.1.77.2
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:Querying DNS Entries for 7.77.1.10 in-addr.arpa. in 2.77.1.10
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:LsaCallAuthenticationPackage(ii=0, op=1) succeeded but protocolStatus is 0x00000522
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:_PerformCredentialOperation(VCS_LSA_OPERATION_ADD) returned 2, 0x00000522
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:_UpdateNewlyCreatedAccount() returned 2, 0x00000522
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:compAcct.Add() returned 2, 0x00000522
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:*** End of debug information dump for troubleshooting ***
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:*** Start of debug information dump for troubleshooting ***
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:CLanManAgent::Online() returned 2, 0x00000522
2010/09/14 14:21:02 VCS DBG_21 V-16-50-0 Lanman:MDTC_SG-Lanman:online:*** End of debug information dump for troubleshooting ***
2010/09/14 14:21:02 VCS ERROR V-16-10051-3032 Lanman:MDTC_SG-Lanman:online:Attempt to online the Lanman resource has failed. error_type:2, error_code:0x00000522