My model was into phase 3 when it attempted a trickle. Unfortunately I had succeeded in filling up the user area diskspace. The request to the server failed, with an empty file message, and the model hung. When I restarted it began the model from scratch (i.e Phase 1), and has since refused to trickle (up to Timestep 17683 as I send this.) What can I do? (Apart from taking more care in future?)

Ouch!

Sounds like a corrupt file has rewound your model for you. If you have a fairly recent backup of your BOINC directory you could restore that so that you have to redo less of the model.

From a science point of view you should continue with the model, but if you can't live without getting credits for the work your system is doing you could do a project reset to force an upload of the restarted job and get a new one. If you do decide to that the workunit will be rescheduled for someone else to run.
<br><a href="http://www.teampicard.net"><img src="http://www.teampicard.net/templates/fisubice/images/phpbb2_logo.jpg"></a><a href="http://climateapps2.oucs.ox.ac.uk/cpdnboinc/team_display.php?teamid=3">Join us here</a>

&gt; Ouch!
&gt;
&gt; Sounds like a corrupt file has rewound your model for you. If you have a
&gt; fairly recent backup of your BOINC directory you could restore that so that
&gt; you have to redo less of the model.
&gt;
&gt; From a science point of view you should continue with the model, but if you
&gt; can't live without getting credits for the work your system is doing you could
&gt; do a project reset to force an upload of the restarted job and get a new one.
&gt; If you do decide to that the workunit will be rescheduled for someone else to
&gt; run.
&gt; <br><a href="http://www.teampicard.net"><img> src="http://www.teampicard.net/templates/fisubice/images/phpbb2_logo.jpg"&gt;</a><a> href="http://climateapps2.oucs.ox.ac.uk/cpdnboinc/team_display.php?teamid=3"&gt;Join
&gt; us here</a>
&gt;

Thanks - I'm afraid I went for the project reset option before getting your reply. Up until now I haven't been backing up my boinc files, but I'll clearly have to consider doing this. I've offloaded a heap of music files from the linux box, and now have plenty of space on it. (Moonlight - the Windows machine - has a 120 GB hard drive but plato only has a 40.)