New Vista Ultimate install. (Dual boot with XP)Application event log shows after every boot :"Windows detected your registry file is still in use by other applications or services. The file will be unloaded now. The applications or services that hold your registry file may not function afterwards.DETAIL -1 user registry handles leaked from \Registry\User\S-1-5-21-3601592387-4294474093-2270024132-1000: Process xxxx (\Device\HarddiskVolume7\Windows\System32\svchost.exe) has opened key \REGISTRY\USER\S-1-5-21-3601592387-4294474093-2270024132-1000 etc."There is another of these warnings for the subsequent 1000 Classes key with matching process id. Entered tasklist /svc in a command prompt, took a snapshot, rebooted, looked at the application event log and it is Windows Defender.Should I be worried ? One time event log even said user hive had been corrupted and a backup loaded.Turned off Defender and the warning goes away.