I have seen these messages on my dsrepair.log .
Are there serious problems?

Physical Check
Repair Trees - Scan Values
Repair Trees - Sorting Values
Repair Trees - Scan Entries
Repair Trees - Sorting Entries
Repair Trees - Check Values
Repair Trees - Check Entries
Total Objects in Database: 3132
Total Objects in Schema : 2226
Total External References: 1
Total Objects in Replicas: 887
Schema Check

Schema Class Definition, Object ID: 000001C6, RDN: Partition
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200013 to 00200033


Schema Class Definition, Object ID: 000001CE, RDN: dcObject
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200002 to 00200022


Schema Class Definition, Object ID: 000001D0, RDN: federationBoundary
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000003E4, RDN: pkiCA
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000003E5, RDN: pkiUser
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000003E6, RDN: certificationAuthority
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000046A, RDN: strongAuthenticationUser
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000046B, RDN: NSCP:mailRecipient
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000046C, RDN: NSCP:nsLicenseUser
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 00000474, RDN: userSecurityInformation
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 00000476, RDN: dmd
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 00000477, RDN: certificationAuthorityVer2
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000051A, RDN: homeInfo
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000051B, RDN: contingentWorker
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000051D, RDN: dynamicGroupAux
ERROR: removing value 000001CD (domain) from Containment rule list

Schema Class Definition, Object ID: 000005B1, RDN: bhPortalConfig
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000005B2, RDN: bhPortalConfigRW
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000005B3, RDN: bhPortalConfigSecretStore
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000005B8, RDN: xTier
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000005D3, RDN: rbsAuxInfo
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000005E5, RDN: nfapCIFSConfigInfo
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000065A, RDN: posixAccount
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000065B, RDN: shadowAccount
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000065C, RDN: posixGroup
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 0000065F, RDN: uamPosixUser
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 00000660, RDN: uamPosixGroup
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000006C5, RDN: naasPolLinkHolder
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000006C6, RDN: naasAuditor
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Schema Class Definition, Object ID: 000006C7, RDN: naasGloballyAuditable
ERROR: removing value 000001CD (domain) from Containment rule list
Ambiguous containment flag
Field 'flags' changed from 00200012 to 00200032


Repairing objects in a replica
Start: Thursday, 9 October 2008 11:32:48 Local Time
[1 of 1] Master : T=MY_TREE
Total objects in partition - T=MY_TREE : 887

NOTICE: Value is more than 60 days old, being deleted



then there are a lot of messages like this:

ERROR: Modification time was incorrect, it has been updated
Object ID: 0000A750, DN: CN=Workstation Package:Windows XP:ZENworks Desktop Management A.OU=PolicyPackage.O=MY.T=MY_TREE


ERROR: Modification time was incorrect, it has been updated
Object ID: 0000A4BE, DN: CN=NFAUWorld.O=MY.T=MY_TREE


ERROR: Modification time was incorrect, it has been updated
Object ID: 0000A4C4, DN: CN=apchadmn-Registry.O=MY.T=MY_TREE
.........


Checking local references
Start: Thursday, 9 October 2008 11:32:55 Local Time

ERROR: Invalid reference to object, ID: 00008A23, value is purged
Attribute 45D45A45, Reference
Object ID: 000086F4, DN: CN=server3.O=MY.T=MY_TREE


ERROR: Invalid reference to object, ID: 00008A22, value is purged
Attribute 45D45A4F, Reference
Object ID: 000086F4, DN: CN=server3.O=MY.T=MY_TREE


ERROR: Invalid reference to object, ID: 00008A23, value is purged
Attribute 45D45A45, Reference
Object ID: 0000A189, DN: CN=serverBCK.O=MY.T=MY_TREE


please can someone explain these errors?
should I worry?

thanks MONICA