My current CPDN wu starts 3z14_ in the CPDN folder under "Projects", I also have a couple of folder trees under CPDN which seem to be connected with my earlier wu's, 2tsy_ and 370v_ - I presume I can delete these? They have several hundred megabytes of files in them.

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.

I see that you have had one WU that completed all three stages - 370v_100170572_0. It is good practise to keep that one if you have room on a hard disk, or on CD/DVD. Move it out of your BOINC folder, though, as it makes backing up easier. You or somebody else might want to look at it later, and there is a new version of the advanced visualisation tool due out soon which will be good for this. Anyway, given all the problems you have had, this one is a bit special to you!

I don't think there is any reason to keep the folders for other WUs that ended prematurely.

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Thank you, I have archived 370v_ and deleted the 2tsy_ structure. Much faster copying now.

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Wave upon wave of demented avengers march cheerfully out of obscurity into the dream.