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There are the following directories there

All Users
Default User
Default User.WINDOWS
LocalService.NT AUTHORITY.000
NetworkService.NT AUTHORITY
NetworkService.NT AUTHORITY.000

Why do I need both Maaartin and Maaartin.PIXLA09 (Pixla09 is my computer's name)?

What is Maaartin.PIXLA09.000 good for?

May it be related to the problem I reported today?

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Were your low on disk space? I usually see such a profile folder created when I try to boot Windows XP while my system drive is out of space (<=1MB free). (For some reason Windows thinks that creating a new directory and copying the default profile uses less disk space than just using the existing profile.) – Synetech Aug 6 '12 at 21:14
@Synetech: It's a long time ago... I can't tell anymore. For some reason whenever Windows "thinks" strange things happens. – maaartinus Aug 7 '12 at 5:28
up vote 1 down vote accepted

I would replace your hard drive, back up your important data now. Those are temporary profiles being created because the disk is corrupt and possibly failing

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Isn't it possible that he's on a domain so some of these are just from instances where the controller wasn't responding properly and there were duplicate profiles created? It's certainly possible that it's a problem with the drive but this sounds a bit alarmist to me. – Shinrai Apr 5 '11 at 16:38
@Shinrai: Good point, but I'm sure it's not the cause. NT AUTHORITY\LocalService and NT AUTHORITY\NetworkService are special accounts, not controlled by SAM or domains. – grawity Apr 5 '11 at 16:52
@grawity - Doh! You're right, I didn't even look that closely at the account names. That's weird. (I still think this sounds a bit alarmist though.) – Shinrai Apr 5 '11 at 16:57
Better safe than sorry when it comes to data. – Moab Apr 5 '11 at 17:09
@Shinrai AFAIK, I am on no domain. I wrote "AFAIK" since I don't know WTF Windows is doing. I installed it myself and set no domain up. @Moab All the most important things are under version control (pushed to a server many times a day), everything gets rsync-ed to an external disk twice a week. What can't be backup are those stupid files locked by Windows (registry stuff or whatever), but when the disk fails, I'll reinstall anyway. – maaartinus Apr 6 '11 at 18:09

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