I doubt anyone did anyone nefarious.  I am not using the server_pool
option - should I be?  The machine in question has a user account set
up just for running sage.  If someone is really interested in taking a
look I could create an account on it.

There was nothing out of the ordinary about the worksheet files that I
could see.  What determines which worksheets are displayed on the
"Home" screen?

If this happens again, my students are going to be very irritated.  I
hope it was a fluke.  Tomorrow they will have a lab and will be
hitting these machines pretty hard.

-Marshall

On Jan 28, 7:25 pm, "William Stein" <[EMAIL PROTECTED]> wrote:
> On Jan 28, 2008 4:27 PM, Marshall Hampton <[EMAIL PROTECTED]> wrote:
>
>
>
> > I now have 14 students actively using Sage on 3 different servers, and
> > I have run across a mysterious problem I haven't seen reported here
> > before.  Three of my students had worksheets suddenly go missing,
> > without a deliberate delete.
>
> There's actually currently no way in the Sage notebook to delete a worksheet.
> You can move it to the trash, but there's no functionality for actually 
> purging
> the trash.  So it's very curious that this happened.  Do the students have 
> *any*
> hints at all about what they might have done to cause the behavior?  I wonder
> if there are any hints in the worksheet files themselves?
>
> Sorry we haven't had any ideas yet, but in any case I think it's very helpful
> that you reported this, so that we can keep it in mind, and if anything 
> similar
> comes up know that it isn't just an isolated incident.
>
> By the way, do your run the worksheet processes under a separate user from
> the sage notebook, e.g, use the server_pool option?   If you don't on a public
> notebook server, maybe a student did something very nefarious that resulted
> in a deleted worksheet.
>
> > I looked in the notebook files and the
> > worksheets were still there, just not visible on the list of
> > worksheets.  Any guesses on what happened?  As a stopgap, I manually
> > pasted in the worksheet text to a new copy, but if this happens a lot
> > it will really aggravate them.
>
> > -M. Hampton
>
> --
> William Stein
> Associate Professor of Mathematics
> University of Washingtonhttp://wstein.org
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