standbyGuest task unexpectedly created - Possible hacker ?

Hi,

WTH happened here ? When I woke up this morning my virtual machine was suspended. Could this be done by a hacker ? How can I trouble shoot that ? Is there anyway to find out why this task why created ?

[2008-12-11 03:10:40.479 'TaskManager' 1074538848 info] Task Created : haTask-160-vim.VirtualMachine.standbyGuest-144
[2008-12-11 03:10:40.479 'PropertyProvider' 1074538848 verbose] RecordOp ADD: recentTask, 160
[2008-12-11 03:10:40.479 'PropertyProvider' 1074538848 verbose] RecordOp ADD: recentTask, ha-taskmgr
[2008-12-11 03:10:40.479 'vm:/vms/plesk01/plesk01.vmx' 1074538848 info] State Transition (VM_STATE_ON -> VM_STATE_HIBERNATING)
[2008-12-11 03:10:40.479 'PropertyProvider' 1074538848 verbose] RecordOp ASSIGN: disabledMethod, 160