Is it possible to pause individual projects (eg. seti, climate prediction, lhc etc), without detaching them?

I have tried setting the CPU usage to 0 but it resets to what it was before.

Is it possible to do this?
If not it should be.

Im asking this because I have a certain project that will not stop running even if its priority gets set to 0.1 (should change away in less than a minute), but it keeps going so I cannot continue my other projects.

Next BOINC version seems to be able to do this ...

<a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=34"><img border="0" height="080" src="http://34.cpdn.sig.boinc.dk?188"></a>

Supporting <b>BOINC</b>, because it is really a <b>great concept !</b>

Thanks

&gt; Next BOINC version seems to be able to do this ...
&gt;
&gt; <a> href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=34"&gt;<img> border="0" height="080" src="http://34.cpdn.sig.boinc.dk?188"&gt;</a>
&gt;
&gt; Supporting <b>BOINC</b>, because it is really a <b>great concept !</b>
&gt;
&gt;

This is rather a future BOINC version, not necessarily the next one. There is a new cross OS GUI comming that appears to do this.
<a href="http://www.boinc.dk/index.php?page=user_statistics&amp;project=cpdn&amp;userid=13"><img border="0" height="80" src="http://13.cpdn.sig.boinc.dk?188"></a>