VMWare Update Manager fails scanning hosts: "There is a cyclic dependency"

I'm running ESX 3.5 with virtual center 2.5 build 84767 and update manager server.

In the tasks list the scan or remediate task says "VmWare Update manager had a failure".

And in the update manger log files i've found this:

[2013-02-27 12:16:10:456 'SetFirewallConfig' 6208 INFO]  [hostUpdateBase, 377] Ruleset name: updateManager
[2013-02-27 12:16:13:223 'SetFirewallConfig' 6208 INFO]  [hostUpdateBase, 384] Firewall ruleset activated
[2013-02-27 12:16:33:717 'scanResultsAnalyzer' 6208 INFO]  [hostUpdateScanResultsAnalyzer, 299] There is a cycle: ESX350-201105405-BG->ESX350-201205401-SG->ESX350-201203401-SG->ESX350-201205401-SG
[2013-02-27 12:16:33:717 'SingleHostScanTask.SingleHostScanTask{33}' 6208 ERROR]  [vciTaskBase, 442] Task execution has failed: There is a cyclic dependency: ESX350-201105405-BG->ESX350-201205401-SG->ESX350-201203401-SG->ESX350-201205401-SG
[2013-02-27 12:16:33:905 'VciScanTask.ScanTask{30}' 6208 DEBUG]  [vciTaskBase, 465] A subTask finished: VciHostScanTask{31}
[2013-02-27 12:16:33:920 'VciScanTask.ScanTask{30}' 6208 DEBUG]  [vciTaskBase, 1052] SerializeToVimFault fault:
(integrity.fault.VcIntegrityFault) {
   dynamicType = <unset>,
   msg = ""
}
Converted fault:
(vim.fault.ExtendedFault) {
   dynamicType = <unset>,
   faultTypeId = "com.vmware.vcIntegrity.VcIntegrityFault",
   data = (vim.KeyValue) [
      (vim.KeyValue) {
         dynamicType = <unset>,
         key = "dynamicType",
         value = "",
      },
      (vim.KeyValue) {
         dynamicType = <unset>,
         key = "dynamicProperty",
         value = "",
      }
   ],
   msg = ""
}
[2013-02-27 12:16:33:920 'VciScanTask.ScanTask{30}' 6208 INFO]  [vciTaskBase, 1056] VciTask { id: ScanTask{30}, type: com.vmware.vcIntegrity.ScanTask }: Setting VC task state to: error
[2013-02-27 12:16:34:124 'VciScanTask.ScanTask{30}' 6208 DEBUG]  [vciTaskBase, 684] Task finished...

I've noticed these rows:

[2013-02-27 12:16:33:717 'scanResultsAnalyzer' 6208 INFO]   [hostUpdateScanResultsAnalyzer, 299] There is a cycle:  ESX350-201105405-BG->ESX350-201205401-SG->ESX350-201203401-SG->ESX350-201205401-SG
[2013-02-27  12:16:33:717 'SingleHostScanTask.SingleHostScanTask{33}' 6208 ERROR]   [vciTaskBase, 442] Task execution has failed: There is a cyclic  dependency:  ESX350-201105405-BG->ESX350-201205401-SG->ESX350-201203401-SG->ESX350-201205401-SG

I can't get any host to report it's update status regarding any baseline.

Everyone knows what should i do now?

Thank you.