That's a 'bug'. I'll explain it a bit more in a few minutes. OK. I had that problem, mainly when vlite was using a temp folder on a hard drive that did not have enough free space (<4GB). This is not caused by an app that would be using the temp folder. The problem is caused by the extraction procedure that creates a sort of new user and this user is the only allowed to remove that temp folder. If the extraction could not complete, then you get this folder. How to remove it: You'll need to edit NTFS rights for that and this is not present in XP Home (though it can be easily added). You may want to disable your antivirus to speed up the process (>20000 files) and you should really close everything else that is running. Browse to your temp folder, right-click on it, click on Properties and then go to the Security tab. Click on the Advanced Properties button (it's the last one). Go to the Owner tab and double-click on any group you're a member of (if you don't know, go for Administrators). Tick the box "Replace..... and sub-...". Click on OK. This should take some time. Close the Properties window. Reopen it, click on the Advanced Properties button, stay on the first tab. Remove each entry (there's a "delete" button), untick the first box, tick the other one. Now click on "Add", type Administrators, press enter, tick the first box in the window you get (first row, first column). OK, OK. Again, this will take some time. Now you can remove it.